1,2,3-Propanetriol, diacetate
Diacetin
CAS: 25395-31-7;194423-61-5
Molecular Formula: C7H12O5
1,2,3-Propanetriol, diacetate - Names and Identifiers
| Name | Diacetin |
| Synonyms | Diacetin Carset 555 Carset 533 Acetin, di- Diacetin FCC Glycerol Diacetate GLYCEROLMONO-ANDDIACETATES 1,2,3-Propanetriol, diacetate GLYCERIL-ALPHA,ALPHA'-DIACETATE (2S)-3-hydroxypropane-1,2-diyl diacetate (2R)-3-hydroxypropane-1,2-diyl diacetate 2-(Acetyloxy)-1-(hydroxymethyl)ethyl acetate |
| CAS | 25395-31-7 194423-61-5 |
| EINECS | 246-941-2 |
| InChI | InChI=1/C7H12O5/c1-5(9)11-4-7(3-8)12-6(2)10/h7-8H,3-4H2,1-2H3/t7-/m1/s1 |
1,2,3-Propanetriol, diacetate - Physico-chemical Properties
| Molecular Formula | C7H12O5 |
| Molar Mass | 176.17 |
| Density | 1.17 g/mL at 25 °C (lit.) |
| Melting Point | -30 °C |
| Boling Point | 280 °C |
| Flash Point | >230°F |
| Water Solubility | Soluble in water, alcohol, ether, benzene |
| Solubility | alcohol: soluble(lit.) |
| Vapor Presure | <1 mm Hg ( 20 °C) |
| Vapor Density | 6.1 (vs air) |
| Appearance | Transparent liquid |
| Color | Clear colorless |
| Merck | 14,2961 |
| BRN | 1706903 |
| PH | 5-6 (50g/l, H2O, 20℃) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Sensitive | Hygroscopic |
| Refractive Index | n20/D 1.440(lit.) |
| MDL | MFCD00008717 |
| Physical and Chemical Properties | Colorless, transparent, water-absorbent, approximately oily, with a slight fatty odor and a slight bitter taste. It is mainly composed of 1,2-and 1, 3-diacetic acid glycerides, and contains a small amount of glycerol monoacetate and glycerol triacetate. The average boiling point was 259 ° C. And the refractive index was 1.44. Miscible in water, benzene and ethanol. |
| Use | Used as solvent for resin, camphor, cellulose derivatives |
1,2,3-Propanetriol, diacetate - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | AK3325000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 29153930 |
1,2,3-Propanetriol, diacetate - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| identification test | solubility soluble in water, miscible in ethanol (OT-42). Glycerol test positive take a few drops of the sample in the test tube, with potassium bisulfate about 0.5g hot, acrolein with pungent volatilization. positive acetate test (IT-1). |
| content analysis | accurately weigh 1g of sample, move into an appropriate pressure-resistant bottle, add 25ml of 1mol/L potassium hydroxide solution and 15ml of isopropanol, add plug, and wrap in a canvas bag. Heat in (98±2)℃ water bath for 1h, the water level in the water bath should be just higher than the liquid level in the bottle. After heating, take the bottle out of the water bath, cool it to room temperature in the air, loosen the canvas, unplug the residual pressure, and then remove the canvas bag. Add 6~8 drops of phenolphthalein test solution (TS-167) and titrate excess alkali with 0.5mol/L sulfuric acid until pink just appears. At the same time, a blank test was conducted. 0.5mol/L sulfuric acid per ml is equivalent to 44.04mg of C7H12O5. |
| toxicity | ADI value is not specified (FAO/WHO,2001). |
| use limit | is not restricted. |
| use | carrier solvent (shellac, resin, etc.). Used as a solvent for resins, camphor, and cellulose derivatives Diacetate is an excellent, efficient, safe and non-toxic organic solvent. |
| Production method | It is obtained by co-heating lmol of glycerol and 2mol of glacial acetic acid. |
Last Update：2024-04-09 15:16:49
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