Name | Triacetin |
Synonyms | FEMA 2007 TRIACETIN Triacetin TRIACETINE Triacetyl glycerin GLYCERYL TRIACETATE Glyceryl triacetate Glycerol triacetate GLYCERIN TRIACETATE GLYCEROL TRIACETATE 1,2,3-Propanetriol triacetate propane-1,2,3-triyl triacetate 1,3-Diacetyloxypropan-2-yl acetate Glycerol Triacetate, USP Grade(1.03000) |
CAS | 102-76-1 |
EINECS | 203-051-9 |
InChI | InChI=1/C9H14O6/c1-6(10)13-4-9(15-8(3)12)5-14-7(2)11/h9H,4-5H2,1-3H3 |
InChIKey | URAYPUMNDPQOKB-UHFFFAOYSA-N |
Molecular Formula | C9H14O6 |
Molar Mass | 218.2 |
Density | 1.16g/mLat 25°C(lit.) |
Melting Point | 3°C(lit.) |
Boling Point | 258-260°C(lit.) |
Flash Point | 300°F |
JECFA Number | 920 |
Water Solubility | 64.0 g/L (20 ºC) |
Solubility | Soluble in water, alcohol, benzene, chloroform, ether and other organic solvents, slightly soluble in carbon disulfide |
Vapor Presure | 0.00248 mm Hg @ 250C |
Vapor Density | 7.52 (vs air) |
Appearance | Transparent liquid |
Color | Clear colorless |
Odor | Characteristic odour |
Merck | 14,9589 |
BRN | 1792353 |
Storage Condition | Sealed in dry,Room Temperature |
Stability | Stable. Incompatible with strong oxidizing agents. Combustible. |
Sensitive | Easily absorbing moisture |
Explosive Limit | 1.05%, 189°F |
Refractive Index | n25/D 1.429-1.431(li |
MDL | MFCD00008716 |
Physical and Chemical Properties | Density 1.155 melting point 3°C boiling point 258°C refractive index 1.429-1.433 flash point 148°C water-soluble 64.0g/L (20°C) |
Use | Used as chromatographic fixative, solvent, toughening agent and perfume fixative |
Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 1 |
RTECS | AK3675000 |
TSCA | Yes |
HS Code | 29153930 |
Toxicity | LD50 i.v. in mice: 1600 ±81 mg/kg (Wretlind) |
Reference Show more | 1. [IF=4.35] Tian Lan et al."Analysis of the Aroma Chemical Composition of Commonly Planted Kiwifruit Cultivars in China."Foods. 2021 Jul;10(7):1645 |
This product is calculated as anhydrous, and the content of ^ ^ ^ ^ should be 97.0% ~ 100.5%.
The relative density of this product (General 0601) in 25T: When 1. 152~158.
The refractive index of this product (General 0622) is 1. 429~432.
take 5 g of this product, add 50ml of neutral ethanol to dissolve, add 5 drops of phenolphthalein indicator solution, and titrate to pink with sodium hydroxide titration solution (0.020mol/L). Consumption of sodium hydroxide titration solution (0.020mol/L) should not pass 1. 0ml.
This product should be colorless, such as color, and yellow 1 Standard Colorimetric liquid (General Principles 0901 The first method) comparison, not deeper.
take an appropriate amount of this product and determine it according to the method of moisture determination (General rule 0832 first method). The water content shall not exceed.
Take 5.0g of this product, burn with small fire to carbonize (place asbestos net), cool, add sulfuric acid 0 .5M l small fire to complete carbonization, cold, plus nitric acid 0. It shall be dried by evaporation on a water bath at a temperature of 350 ~ 400C to make it ash completely. It shall be checked according to law (General rule 0821, Law 2) and shall not contain more than 5 parts per million of heavy metals.
take 0822g of this product, dissolve it with 0.0005% ml of water and 5m l of hydrochloric acid, and check it according to law (General rule first law), and it shall comply with the regulations ().
take this product 0. 3G, precision weighing, 250ml Erlenmeyer flask, precision plus human ethanol potassium hydroxide titration solution (0.5 M o l/L )2 5 M l and several grains of glass beads, shake well, heat and reflux for 30 minutes, let cool, add phenol indicator solution 0.5 m l, with hydrochloric acid titration solution (0.5 M o l/L) titration, and the results of the titration were corrected by blank test. Each ml of potassium hydroxide titrant from ethanol (0. 5mol/l) corresponds to 36. 37mg of C9H 1406.
pharmaceutical excipients, solvents, plasticizers and humectants.
sealed and preserved in a dry place.
FEMA | 2007 | (TRI-)ACETIN |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Properties | Dissolved in carbon disulfide, carbon tetrachloride and benzoyl chloride. Hydrolysis into phosphoric acid and hydrogen chloride in humid air, producing white smoke and special irritation. When heated to 160 ℃, sublimation begins and the right part decomposes. At 300 ℃, it is completely decomposed into chlorine and phosphorus trichloride. The pure product is white, and it is light yellow because it is partially decomposed into phosphorus trichloride and chlorine gas after being placed. |
use | used as chlorinating agent, catalyst, dehydrating agent. used as plasticizer and perfume fixing agent, ink solvent, also used in the synthesis of medicine and dyes used as chromatographic fixing liquid, solvent, toughening agent and perfume fixing agent humectant; carrier solvent; plasticizer; absorb carbon dioxide from natural gas. According to the provisions of GB 2760~96 in our country, it is allowed to be used for spices. Used as perfume fixing agent, solvent and toughening agent. Used in the production of cosmetics, medicine and dyes, as a plasticizer for cigarette filter rods, etc. Used as cigarette filter binder and perfume fixative, solvent, toughening agent. And can be used in cosmetics, casting, medicine, dyes and other industries. This product is non-toxic and non-irritating. Determination of lipase substrate, perfume fixative, solvent, gas chromatography stationary solution (maximum use temperature 85 ℃, solvent is methanol, chloroform), separation and analysis of gas and aldehyde. |
content analysis | accurately weigh about 1g of sample, put it into an appropriate pressure bottle, and add 1mol/L. 25.0ml of potassium hydroxide solution and 15ml of isopropanol are plugged, wrapped with cloth and placed in a sail cloth bag. The water level in the water bath at 98 ℃ and 2 ℃ should be slightly higher than the liquid level in the bottle. Remove the bottle from the bag, cool it to room temperature in the air, loosen the cloth and stopper to release the remaining pressure in the bottle, and then remove the cloth. Add 6~8 drops of phenolphthalein test solution (TS-167) and titrate excess alkali with 0.5mol/L sulfuric acid until pink has just disappeared. At the same time, the blank test is carried out as above. 0.5mol/L sulfuric acid per ml is equivalent to 36.37mg of triacetate (C9 H14O6). |
toxicity | ADI does not make special regulations (FAO/WHO,2001). GR.AS(FDA,§ 182.1901,2000). LD50 3000mg/kg (rat, oral). |
usage limit | FEMA(mg/kg): soft drink 190; Cold drinks 60~2000; Candy 560; Baked products 1000; Gum candy 4100. |
Production method | is obtained by esterification of glycerol and acetic acid. After preheating the glycerin to 50-60°C, add acetic acid, benzene and sulfuric acid. Heat, stir, reflux, dehydrate, recover benzene after dehydration, add acetic anhydride, and heat for 4 hours. After cooling, neutralize pH to 7 with 5% sodium carbonate, remove the water layer, and dry the crude oil with calcium chloride. Distillate under reduced pressure to collect the fraction at 128-131 ℃(0.93kPa), which is triglyceride. It is obtained by vacuum distillation and purification after esterification of acetic anhydride and hot glycerol. |
auto-ignition temperature | 809 °F |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |