Propylene glycol CAS# 57-55-6
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Propylene glycol is scientifically named as ??1,2-propanediol??, and has a chemical formula of CH3CHOHCH2OH and a molecular weight of 76.10. There is a chiral carbon atom in the molecule. Its racemate is a hygroscopic viscous liquid and is slightly spicy. It has a specific gravity of 1.036 (25/4 ??C), a freezing point of-59 ??C, and a boiling point of 188.2 ??C, respectively 83.2 ??C (1,333 Pa). It is miscible with water, acetone, ethyl acetate and chloroform, and is soluble in ether. It is soluble in many essential oils, but is not miscible with petroleum ether and paraffin oil. It is relatively stable to heat and light, and is more stable at low temperatures. Its L-isomer has a boiling point of 187 to 189 ??C and a specific optical rotation [??] of D20-15.0??. It can be oxidized at high temperatures to propionaldehyde, lactic acid, pyruvic acid and acetic acid.
Propylene glycol CAS# 57-55-6
| Propylene glycol Basic information |
| Physical and Chemical Properties?Medicinal property and application?Content analysis?Toxicity?Use limitation?Uses?Synthesis method?Acute toxicity?Irritation data?Extinguishing agent |
| Product Name: | Propylene glycol |
| Synonyms: | Sentry Propylene Glycol;Sirlene;Solar winter ban;Solargard P;solargardp;1,2-Propanediol,98+%;1,2-Propanediol,ACS,99.5%;1,2-Propanediol, 99+% |
| CAS: | 57-55-6 |
| MF: | C3H8O2 |
| MW: | 76.09 |
| EINECS: | 200-338-0 |
| Product Categories: | Medicine grade;INORGANIC & ORGANIC CHEMICALS;57-55-6 |
| Mol File: | 57-55-6.mol |
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| Propylene glycol Chemical Properties |
| Melting point | -60 ??C (lit.) |
| Boiling point | 187 ??C (lit.) |
| density | 1.036 g/mL at 25 ??C (lit.) |
| vapor density | 2.62 (vs air) |
| vapor pressure | 0.08 mm Hg ( 20 ??C) |
| refractive index | n20/D?1.432(lit.) |
| FEMA | 2940 | PROPYLENE GLYCOL |
| Fp | 225???F |
| storage temp. | Store at +5??C to +30??C. |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| pka | 14.49??0.20(Predicted) |
| form | Viscous Liquid |
| Specific Gravity | 1.038 (20/20??)1.036??1.040 |
| color | APHA: ??10 |
| PH | 6-8 (100g/l, H2O, 20??) |
| Odor | at 100.00 %. odorless very slight alcoholic |
| Odor Type | odorless |
| explosive limit | 2.4-17.4%(V) |
| Water Solubility | miscible |
| Sensitive | Hygroscopic |
| JECFA Number | 925 |
| Merck | 14,7855 |
| BRN | 1340498 |
| Dielectric constant | 32.0 |
| InChIKey | DNIAPMSPPWPWGF-UHFFFAOYSA-N |
| LogP | -0.92 |
| CAS DataBase Reference | 57-55-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Propylene glycol(57-55-6) |
| EPA Substance Registry System | Propylene glycol (57-55-6) |
| Safety Information |
| Safety Statements | 24/25 |
| WGK Germany | 1 |
| RTECS | TY2000000 |
| Autoignition Temperature | 779 ??F |
| TSCA | Yes |
| HS Code | 29053200 |
| Hazardous Substances Data | 57-55-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 19400 – 36000 mg/kg LD50 dermal Rabbit 20800 mg/kg |
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