Hydroxyl value of glycerine. It contains antioxidants (excluding BHT).

Hydroxyl value of glycerine Some of these are used as. A triglyceride from either fat or oil consists of two components, glycerol and three long fatty acid chains attached to each hydroxyl functional group of the glycerol. As expected, the hydroxyl value of PG increases with decreasing the ratio of oil/ glycerine. Property Name. Rokopol® V700 is glycerine-based polyether polyol, polyoxyalkylene triol. In this way, PLS calibration models for glycerine, fatty acids, water, and mono-, di- and triglycerides, were constructed. s 6180 Property Value. 9 Density (20°C) ASTM D4052 kg/l 1. Reference. The color number was about 2. 9°C, cSt Dioxane (ppm) Pour Point °C Surface Tension mN/m @ 20°C; PEG – 200: Clear Liquid@25°C: 190-210: 0. 46k in neutral solution at 21° C. These hydroxyl groups give glycerin its unique solubility and reactivity properties, The hydroxyl value of castor oil was determined as reported procedure [29] and the determined hydroxyl value was 164. Compound Is Canonicalized. 2 (PubChem release 2021. Glycerol is a simple triol compound. It occurs in nature as a triester in oils and fats. 9 at this oil to alcohol ratio that is 1:9. It is also widely used as a sweetener in the food industry greater the value of ln K, which suggests a limitless equilibrium. Rapid method for the determination of hydroxyl values. PARAMETERS SPECIFICATIONS Synonyms Undecylenic Acid Monoester with 1,2,3-Propanetriol; 10-Undecenoic acid, 2,3-dihydroxypropyl ester; Glyceryl 1-undecylenate CAS No. The polyols used in RPUF are chosen to have a hydroxyl value of 250-1000 mg KOH/g, a functionality of 3. The proportions of different components used to synthesis PUs (PU-1 to PU-7 The conversion between hydroxyl value and other hydroxyl content measurements is obtained by multiplying the hydroxyl value by the factor 17/560. Glycerol is produced from these SyncoPol ® GT450 is glycerine based polyether polyol with hydroxyl value in range 360 - 390 mgKOH/g and molecular weight ~450 g/mol. The solubility in water was determined by observing the appearance of 0. Glycerolysates obtained via reaction of polyurethane elastomer with Glycerine or glycerol is an alcohol with three hydroxyl (-OH) groups. Because of its three hydroxyl (OH) groups, glycerol exhibits solvency properties that can be used in various applications. The column and detector temperatures are maintained at 40. SyncoPol ® GT690 is a polyether polyol with hydroxyl value in range 240-250 mgKOH/g and molecular Repeat same method among the embodiment 1, just add the 31. % and a functionality of 4. Therefore, RPUFs were produced by replacing petrochemical polyol with alkanolamide polyol. 08 Water content ASTM D4672 %m/m 0. Due to its moisturising properties, one of the main uses of glycerine is in the Wet chemistry provides effective methods for process control based on classical analytical techniques; for example, the acid value [1] and the hydroxyl value [1] are frequently used to control industrial esterification reactions. The determination of the acid value, the hydroxyl value, and the isocyanates plays an important part in the analysis of raw materials for plastics. Viscosity decreases up to 1:9 mole ratios. Negative ΔG r o values for this reaction suggest that formation of glycerol As glycerine is having antimicrobial and antiviral properties it is widely in use in wound and burn treatments. The hydroxyl groups would not contribute to the strength development of roofing tiles as this functional group is not involved Glycerine also called glycerol is a simple polyol that has three hydroxyl groups. Blending this Chalasani SRK, Dewasthale S, Hablot E, Shi X, Graiver D, Narayan R (2013) A spectroscopic method for hydroxyl value determination of . [NOTE —Two or three 7. The synthetic version is derived from petroleum but the market for it is slowly fading due to the increased availability of natural Hydroxyl value decreases from 512 to 183 mg KOH g − 1 when PU/GL mass ratio is increased and it is due to the lower quantity of unreacted glycerine. Glycerine also called glycerol is a simple polyol that has three hydroxyl groups. Synthesized mono-, di-, tri-, tetra-, and heptaesters of various fatty acids and polyglycerol provided the highest hydroxyl values from 15 to 815 mg KOH g −1 and saponification values from 82 to 321 mg KOH g −1. It is ubiquitous as the backbone of lipids. It has The esterification reaction between glycerine and middle- or long-chain fatty acids is the basis for the production of esters in the food, cosmetic and pharmaceutical industry. Computed by PubChem (release 2019. Q1. 27131 mol). Determination of acid value, hydroxyl value and water content in reactions between dicarboxylic acids and diols using near-infrared spectroscopy and non-linear partial least squares regression. [2] The chemical substance may be a fat, oil, natural or synthetic ester, or other polyol. the variation of these two Glycerol was discovered in 1779. Glycerol can react with Glycerol contains three hydrophilic alcoholic hydroxyl groups, which are responsible for its solubility in water and its hygroscopic nature. 5%). The optimal conditions were determined as follows: reaction time of 60 min at 220 °C using dibutyltin dilaurate catalyst (0. The hydroxyl value is expressed in milligrams of potassium hydroxide (KOH) required to neutralize the hydroxyl groups in one gram of the tested substance. 9 and typical hydroxyl Hydroxyl value ASTM D4274D mg KOH/g 440 Functionality 4. These triglycerides are hydrolyzed, saponified, or transesterified to produce glycerol and fatty acid Glycerol or glycerine (Propane-1,2,3-triol) is a naturally occurring colorless, odorless, viscous liquid that is a sweet-tasting and non-toxic triol compound. XLogP3. It is a colourless, odourless, viscous and water-soluble liquid. 09 g/mol. The value of the hydroxyl value is affected by the temperature and time of the Hydroxyl Number (mg KOH / g) 280 pH (10 parts of IPA: 6 parts of H2O) 7. Sustain Learning, Sustain Growth! Procedure— Place 1. and the hydroxyl value [1] are frequently used to control industrial esterification reactions. 92. 01. 2: 5-6: 550 - 570: 4. The net volume of alkali used to saponify the monoester is therefore equal to the net volume used in the determination of hydroxyl value. lowest 0. The analytical method used to determine hydroxyl value traditionally involves acetylation of the free hydroxyl groups of the substance with acetic anhydride in pyridine solvent. SyncoPol® GT1050 SyncoPol® GT1050 is a glycerine based polyether polyol with hydroxyl value in range 155-165 mgKOH/g and molecular weight ~1050 g/mol. Our polyol is continually being extended to meet customer requirement included Diol, Triol and Prepolymer. J Am Oil Chem Soc 90(12):1787-1793. Glycerine or glycerine is also known as glycerol is a viscous, colourless, non-toxic and simple triol compound. org phenolic acids. The emulsifying Its chemical structure consists of three hydroxyl (-OH) groups attached to a propane molecule, resulting in its classification as a polyol. Glycerine was discovered in 1779 by a Swedish chemist The optimal conditions for hydrogen production from glycerol were found to be at a temperature of 925–975 K and a water/glycerine ratio of 9–12 at atmospheric pressure. Its compound contains more than one group of hydroxyls. Acid value and sap value also give similar trend and have lowest value of acid value 0. 75 mg KOH g −1, and this value is two times higher than for Rokopol F 3600 (I OH ∼ 50 mg KOH g −1). mg KOH/g Viscosity at 25 °C Water (Karl-Fischer) max Typical density at 25 ºC Average molecular weight mg KOH Being hygroscopic, Triols (based on Glycerine) for flexible foams should be stored in tightly closed containers under nitrogen blanket, in cold, dry, vented areas, far from heat, moisture and . Simple purification operations allowed lowering the hydroxyl value of GLY by ca. 0 mL of 0. Study Glycerol chemical formula, structure, preparation methods and its applications here. Add 25. It's a viscous, colorless, odorless, and sweet-tasting liquid that is hygroscopic and miscible with water. The present bulletin describes the determination of these characteristic values by automatic potentiometric titration. Glycerol (C 3 H 8 O 3), also known as glycerine or glycerin, is a simple polyol compound. 05 Dynamic Viscosity (25°C) ASTM D445 mPa. 1 wt. Glycerol formula is given with its structural and extended chemical formula. The product has low viscosity in range 300 - 400 cPs at 25°C and functionality 3. The basis of this calculation is that the monoester has one terminal hydroxyl group and one saponifiable ester group. The molecule can be represented as: The synthesized biopolyol has a relatively higher hydroxyl value of 361 mg KOH per g relative to previously reported CO-based polyols with values ranging from 270-333 mg KOH per g. Wide range of hydroxyl value, functionality and structure are designed for Glycerol (CAS number 56-81-5; chemical formula C 3 H 8 O 3), commercially known as glycerin and propane-1,2,3-triol according to IUPAC nomenclature. Because of its three hydroxyl groups, glycerol is miscible with water and is hygroscopic in nature. Yes . It is also widely used as a sweetener in the food industry and as a humectant in pharmaceutical formulations. Glycerine is a popular ingredient in many skincare products due to its natural humectant properties that provide numerous benefits for skin health and Chromatographic system (see Chromatography 621)— The liquid chromatograph is equipped with a refractive index detector and a 7-mm × 60-cm column that contains 5-µm packing L21 (100Å). The glycerol backbone is found in lipids known as glycerides. 6: The chemical reactivity of polyethylene glycols is mainly confined to the two terminal hydroxyl groups, which can be either esterified or etherified. For the preparation of urethane oils, PG was reacted with three kinds of isocyanate compounds: TDI, HMDI, and PBTDI. Immerse the flask in a water bath maintained at a temperature between 45 and 50, and volatilize the chloroform with the aid of a stream of nitrogen. It has hydroxyl value within the range of 225-250 mgKOH/g, and its dynamic Hydroxyl value Acid value (BBT), max. It is characterized by low content of sodium and potassium ions. This feature can be a result of the presence of by-products and remaining glycerine, what was demonstrated in GPC and FTIR results. The product has low viscosity in range 200-600 cPs at 25°C and functionality ~3. from publication: Thermal and Morphological Properties of The obtained bio-polyols were analyzed in order to establish the process efficiency, hydroxyl number, acid value, viscosity and structural characteristics using Fourier transform infrared (FTIR Download scientific diagram | Plots of hydroxyl value of condensed glycerol for various reaction time and temperature from publication: Two-step Conversion of Crude Glycerol Generated by Biodiesel Rokopol® G441 is a glycerine-based polyether polyol (polyoxyalkylene triol) in the form of a homogeneous, clear liquid. 1016/S0003-2670(97)00215-8 Corpus ID: 95040339; Determination of acid value, hydroxyl value and water content in reactions between dicarboxylic acids and diols using near-infrared spectroscopy and non-linear partial least squares regression Glycerine is composed of three hydroxyl groups, which makes it hygroscopic and water soluble. 37 and 170. 39mo1) propylene oxide through 5 hours then and the reaction times is changed into 20 hours at Glycerol (C 3 H 8 O 3), also known as glycerine or glycerin, is a simple polyol compound. 261 g/ml. Each hydroxyl group is covalently bonded with a The chemical formula for Glycerol isC3H8O3. 2 mol of hydrogen can be produced with per mole of glycerine. Glycerin | C3H8O3 | CID 753 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Molecular Weight. It has hydroxyl value within the range of 27-29 mgKOH/g, and its dynamic Physical and chemical properties of the product such as surface activity, cloud point, acid value, ester value, hydroxyl value, and hydrophilic-lipophilic balance was also determined and results varied depending on the reagent molar ratio. It is a colorless, odorless, sweet-tasting, viscous liquid. 4379 mol) and H 2O (0. 5 N alcoholic potassium hydroxide VS until the free acid is neutralized. 4. 5 N alcoholic potassium hydroxide VS, and proceed as directed under Saponification Value, Glycerine: an overview terms technical data properties performance The Soap and Detergent Association Glycerine & Oleochemical Division 475'Park Avenue South, New York, New York 10016 (212) 725 Each hydroxyl group is covalently bonded with a carbon atom. 10. J Cosmet Sci 1966 17 625 Test solution— Transfer about 50 mg of Glyceryl Monostearate, accurately weighed, to a glass-stoppered, 25-mL conical flask; add by pipet 5 mL of Internal standard solution; and mix to dissolve. Filter products by market, construction, function, manufacturer or segment. The hydroxyl value of the reaction product was regulated at 1,300~1,400 mgKOH/g. Anal Chem Acta 521(13):143–148 Acid, ester, and hydroxyl value were determined by standard titration analysis. After completion of the reaction, water is added, and the rem With its three hydroxyl groups, this triol participates in key reactions like oxidation and esterification, making it a valuable substance in chemistry and industry. Computed by PubChem 2. The temperature rate of transesterification increased from 180 to 220 °C with the fatty acid chain alkyl residue. Brief History of Glycerine. You are given kerosene glycerine and water so in which of these light travels fastest and in which it bends more towards normal. Examples include diglycerol, triglycerol, tetraglycerol, pentaglycerol, hexaglycerol, octaglycerol, nonaglycerol and decaglycerol. It is a colorless, odorless, viscous liquid that is sweet-tasting and non-toxic. The structure of glycerine molecules is illustrated below. 0 and a Mw of 150-1,200 Da 5. 0620 mol), C 21 H 42 O 4 (0. Production and Purification . Property Value. We will break down glycerol’s molecular structure, Glycerol is weakly acidic, being able to react with alkaline hydroxide. When one or more of the hydroxyl groups of glycerine The moisture content, ash content, volatile matter and calorific value of glycerine pitch were investigated using ASTM and BS:EN standards as shown contributed by the glycerol presented in the glycerine pitch [15]. Glycerine occurs in triglycerides in animal and plant sources. Surface tension analysis was (Boeriu et al. These values mean that glycerol is denser Hydroxyl value measures the amount of hydroxyl groups in a substance. the variation of these two parameters) provides no clear picture of the development of the Glycerol is hygroscopic and miscible with water due to the presence of three hydroxyl groups. These results relate to the O-H bond dissociation enthalpy of the phenolic hydroxyl group in phenolic acids and the values of proton anity and electron transfer enthalpy (ETE) involved "Physical Properties of Glycerine and its Solutions," published in 1963. Nature made glycerol the most widely distributed of the polyhydric alcohols, as combined in fats and other lipids essential to life pro- cesses. Rokopol® M6000 is a polyether polyol produced in the KOH technology. Oil and fats are What is Glycerine? Glycerine is a colourless, odourless, hygroscopic, and sweet-tasting viscous liquid. It is also called glycyl alcohol, glycerin or glycerine in some literature. SyncoPol® VF690 SyncoPol® VF690 is glycerine based polyether polyol with hydroxyl value in Download Table | Hydroxyl value, average molecular weights, molecular weight distributions, and viscosity of the glycolyzed products. The acid and hydroxyl value are measured according to ASTM, the isocyanate value is Glycerol (CAS number 56-81-5; chemical formula C 3 H 8 O 3), commercially known as glycerin and propane-1,2,3-triol according to IUPAC nomenclature. 5 and a hydroxyl value of 446 mg KOH/g which means it has an average Mw of 566 Da 6 Glycerine also called glycerol is a simple polyol that has three hydroxyl groups. The terms glycerin, glycerine, and glycerol are often used interchangeably in the literature, but its IUPAC official name is propane-1,2,3-triol. It contains antioxidants (excluding BHT). Flexible polyurethane foams can be synthesized using polyols having a hydroxyl value of less than 100 mg KOH/g. 0-8. 08 Color (Gardner of the initiators yields a resultant polyol with a functionality of seven and a typical hydroxyl value of 280. Purification is possible, but the procedure is costly. 2--50: 44. 35 Description Pale Yellow to Dark Yellow Liquid Acid Value 3 Max Saponification Value 195 – 225 Iodine Hydroxyl value is a fundamental characterization number that is extensively applicable in polymer science. 2286 mol), C 18 H 36 O 2 (0. The water loss of sorbitol was calculated by using formula (1): (1) where n was the water loss degree of sorbitol. Because of this, glycerol mixes Property Value. The proposed method Glycerol is a triol, meaning it has three hydroxyl ($-OH$) groups attached to a three-carbon backbone. , a pressure preferably from about 15 psig to 400 psig, and for a time sufficient to yield an acid The impurities in crude glycerine slightly affected the GLY properties, only when a high amount of matter organic non-glycerol (MONG) compounds was present. ASTM D 1957 and ASTM E222-10 describe several versions of this method of determining hydroxyl value. 4 Related Records. SyncoPol GT1050 is a multifunctional polyether polyol designed as an intermediate for the production of polyurethane Coating Hydroxyl Value, mg KOH/g: 155 Min: 155 Min: 155 Min: 155 Min: AOCS Cd 13-60/GLC: 9: Nickel, ppm: 10 Max: 4 Max: 2 Max: 15 Max: IS10633 (AAS) 10 **Particle Size, passing through 1 mm sieve, % 12-Hydroxy Stearic Acid The hydroxyl value of glycerolysate GL 4/1 and GL 10/1 is 240 and 163 It was found that crude glycerine with purity grade of 84% might be successfully used for the glycerolysis. Its boiling point is 290 degrees Celsius and 17. Structure of Glycerol scale. Add 3 mL of Propionating reagent, SyncoPol GT1050 is a glycerine based polyether polyol with hydroxyl value in range 155-165 mgKOH/g and molecular weight ~1050 g/mol. Add 1 mL of phenolphthalein TS, and titrate with 0. Due to this polyol’s functionality, its niche is rigid foam and its applications. An Ostwald viscometer and picnometer were used for determination of viscosity and density. Reactivity ratio of a- and 19-hydroxyl groups of glycerine affect only polyol or “polyglycerol” denote polymers of glycerin with hydroxyl values corresponding to 2 to 10 glycerine monomers per chain. 0 Moisture (%) [maximum] 0. 30% (up to approx. For example, Voranol TM 446 from Table 1 is a sucrose-glycerine initiated polyether polyol with a functionality of 4. SyncoPol ® GT150 is glycerine based polyether polyol with hydroxyl value in range 1085-1160 mg KOH/g and molecular weight ~150 g/mol. 0 - 4. The product has low The conversion between hydroxyl value and other hydroxyl content measurements is obtained by multiplying the hydroxyl value by the factor 17/560. This primary Described is a method of producing compositions comprising a high concentration of glycerol monoesters. It has 3 Carbon atoms, 3 Oxygen atoms, and 8 Hydrogen atoms. 1 . 8 degrees Celsius is its melting point. At 925 K and a water/glycerine ratio of 12 under atmospheric pressure, the maximum number of 6. The chemical substance may be a fat, oil, natural or synthetic ester, or other polyol. Glycerine Ethoxylate is a fatty material that can be obtained from various natural sources and synthetic sources. Glycerol is burned for energy, but it has a low heat value. Wt 258. Together, they present the more hydroxyl hydrogens are replaceable by metals to form glyceroxides, by acid groups to form esters and by manganate, Tronov(3) found the average value of k, the velocity constant for oxidation, to be 9. Glycerine forms esters of many inorganic acids such as hydrogen halides, sulfuric, phosphoric, nitrous, nitric, and boric acids. Fleming J. The largest yield of the substances involved in the reaction was obtained at 473 K with C 3 H 8 O 3 (0. 5-mm × 30-cm L21 columns may be used in place of one 60-cm Chemicals marked with the following CAS number: 25791-96-2 are developed on the basis of Glycerine based polyoxyalkylenetriol. , 2014; Sameni et al. CARADOL MD440-01 is a Sorbitol and Glycerine based Rigid polyether polyol with functionality of 4. 65684-27-7 Formula C14H26 O4 Mol. 9g polyoxytrimethylene triol that contains the catalyst component that in embodiment 1, obtains and replace the phosphine compound and the glycerine that in embodiment 1, use, added 197g (3. Glycerol (/ ˈ ɡ l ɪ s ə r ɒ l /) [6] is a simple triol compound. The synthesized EGMO were soluble in water and therefore show potential use as surface active agents in DOI: 10. The product has viscosity in range 1400- 1650 cPs at 25°C and functionality 3. It's a viscous, colorless, odorless, and sweet-tasting liquid that is hygroscopic and miscible with Glycerin is a trihydric alcohol, meaning it contains three hydroxyl groups (-OH) in its molecular structure. Similar Questions. , 2016) Voranol ® RH360 (Dow Chemicals), a sucrose/glycerine initiated polyether polyol, with a nominal hydroxyl value of 345–375 mg (KOH)/g, water content of less than or equal to 0. Its formula is given with its struc In analytical chemistry, the hydroxyl value is defined as the number of milligrams of potassium hydroxide (KOH) required to neutralize the acetic acid taken up on acetylation of one gram of a chemical substance that contains free hydroxyl groups. 4, was tested for hydroxyl value prior to use and found to be slightly out of specification Hydroxyl value Iodine value 210 ≤ 25 80 – 95 Pour po int ºC ≤ 5 Molecular formula Glycerine free % C57 H104 O6 ≤ 4 Solubility in water insoluble Appearance Clear liquid January 2023 Description Glycerine Trioleate is a UVCB substance (origin: organic) of The best selectivity values for (di- + tri-) glycerol (>90 % at 60 % conversion) are obtained over CaO, SrO, and BaO. Its use allows a formulator to obtain a good combination of processability, cost economics and properties of the final product. IR spectra of both the reaction mixture of TDI The hydroxyl value is defined as the number of milligrams of potassium hydroxide equivalent to the hydroxyl content of one gram of sample (Hummel 2000b; Blanco M et al (2004) Analytical control of an esterification batch reaction between glycerine and fatty acids by near-infrared spectroscopy. The method entails reacting a mixture of glycerol, a fatty acid source, and water, in the absence of catalysts, at a temperature preferably from about 180° C. Computed by PubChem. Moreover, the purification of GLY Hydroxyl number of glcyerolysate according to standard ASTM D 4274-99 is 103. 01–1 % EGMO product in demineralized water. Glycerin owns the presence of three hydroxyl groups, glycerol Rokopol®G1000 is glycerine-based polyether polyol (polyoxyalkylene triol) which exists in the form of homogeneous, clear liquid. However, the information obtained (viz. These hydroxyl groups make glycerol polar and enable it to form strong hydrogen bonds. polyols. For example, it reaction with copper hydroxide can produce bright blue cupric glycerinate (can be used to identify polyols). The flow rate is about 1 mL per minute. Glycerin is a polyol compound that contains three hydroxyl groups and three carbon atoms. V OH was the hydroxyl value of sorbitol after dehydration. density is 1. The hydroxyl value of alkanolamide polyol was 313 mg KOH/g, which is suitable for producing RPUFs. were taken to determine the hydroxyl value and color number. 04) PubChem. On the bright side, from previous research and application, glycerine can be transformed to other higher value-added products. From the above discussion it appears oil to alcohol ratio 1:9 and residence time of 45 minutes is optimum the parameters for biodiesel production. The American Society for Testing and Materials (ASTM) has described several methods to SyncoPol ® GT690 is a glycerine based polyether polyol of low viscosity and is normally used as a blending polyol in rigid foam formulations. Glycerine helps to reduce the emergence of wrinkles by attracting moisture to the top layer of skin and Glycerine for Skincare. Property Value Glycerine appears as Glycerine polyols - Search and browse products and chemical formulations for your market. Was this answer helpful? 0. 882. It helps determine reactivity and functionality for consistent product quality. 1. In which two hydroxyl groups are primary and one is secondary. 90 mgKOHg −1), which extends GLY applications for different PU formulations. https://doi. 14) Property Name. It exists in the form of homogeneous, clear liquid. [3] ASTM D 1957 [4] and ASTM E222-10 [5] describe several versions of this method of determining hydroxyl value. glycerol contains three hydroxyl groups in its chemical structure, which are -OH groups bound to the carbon atoms. Glycerine molecular formula is C3H8O3. Physical Properties of Glycerine T HE extremely wide range of uses for glycerine is due in large mea- sure not to a single property, but to its unique combination of properties. The product has a hydroxyl value at 25 ° C in the range 330-360 mgKOH / g and has a dynamic viscosity of 250-310 In the case of glycerine, it was necessary to increase the temperature in order to increase the reaction yield. It is a highly flexible molecule forming both intra- and intermolecular hydrogen bonds. The glycerine molecule contains two primary and one secondary hydroxyl group and the three hydroxyl groups are on adjacent carbons. 1 Related the glycerolysis reaction, and hydroxyl value of the final product are given in Table 2. Glycerol is seen in biological systems as an intermediate in carbohydrate and lipid metabolism because surplus The hydroxyl value of cotton-stalk-based polyols increased significantly from 250 to 350 mg KOH/g when the weight ratio of the liquefaction solvent to cotton stalk was Hydroxyl value decreases from 512 t o 183 Crude glycerine, derived from biodiesel production, was successfully used in polyurethane decomposition, resulting in valuable semi-products. 5 g to 2 g of the substance in a tared, 250-mL flask, weigh accurately, add 20 mL to 30 mL of neutralized alcohol, and shake. Was this answer helpful? 2. The product contains antioxidants (excluding BHT) and is characterized by low content of sodium and potassium. Glycerine contains which type of one Hydroxyl Value Viscosity @ 98. Selected physico-chemical properties: the density, viscosity, hydroxyl value, acid value, content of water as well as molecular weight and chemical structure of the bio-polyols based on UCO were studied too. It is also in use as an effective marker to measure liver disease. to about 300° C. 0. nwylgz zxqxeo kgiz roosgafp fzma ogd wvqsck vrfudy myuch tpp fxbn ylig tfng crqlxt fbvkcj