Propylene glycol CAS# 57-55-6
![2-(2-[4-(1,1,3,3-Tetramethylbutyl)phenoxy]ethoxy)ethanol CAS#9036-19-5](https://bgbchem.com/wp-content/uploads/2025/08/2-8-2.jpg)
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 |
 |
|
| 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 |
Related Products
Chemical Name: Ammonium Iron(II) Sulfate
Synonyms: Diammonium iron bis(sulphate); iron (ii) ammonium sulfate
CAS No.: 10045-89-3
Molecular Formula: FeH5NO4S
Molecular Weight: 170.95
Chemical Name: o-Xylene
Synonyms: 1,2-Dimethylbenzene; ortho-xylene
CAS No.: 95-47-6
Molecular Formula: C8H10
Molecular Weight: 106.17
Butylated Hydroxytoluene (BHT) is a synthetic phenolic antioxidant commonly added to foods, cosmetics, and packaging to prevent the oxidation of fats and oils, thereby extending their shelf life. It is also used as a preservative in a variety of products, including rubber, petroleum products, and animal feed. BHT is recognized for its effectiveness in maintaining nutrient levels, color, flavor, and odor in food products . It is known to have a melting point of 69-71??C, a boiling point of 265??C, and is soluble in ethanol, acetone, and benzene, but not in water, glycerin, or propylene glycol . BHT is also used in some dietary supplements due to its antioxidant properties . However, it is important to handle BHT with care, as it can cause skin irritation and is considered harmful if swallowed .
Chemical Name: STODDARD SOLVENT
CAS No.: 64742-88-7
Appearance: Colorless or Light Yellow Liquid
Ethylhexyl Palmitate is a skin-conditioning ester, derived from ethylhexanol and palmitic acid, that imparts moisturization and a smooth texture to cosmetic and personal care formulations. It is valued for its emollient properties, enhancing the sensory experience of skin care products.
Chemical Name: Imazalil Sulfate
CAS No.: 58594-72-2
Molecular Formula: C14H14Cl2N2O.H2SO4
Molecular Weight: 395.26
Appearance: Solid
Chemical Name: UV-120
Other Name: (2’,4’-Di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate)
CAS No.: 4221-80-1
Molecular Fomula: C29H42O3
Molecular weight: 438.66
Assay: ≥99%（LC）
Chemical Name: 1,1,2,2-Tetrachloroethane
Other Name: Tetrachlorethane
CAS No.: 79-34-5
Molecular Formula: C2H2Cl4
Molecular Weight: 167.85
Appearance: Liquid
Chemical Name: Ashwagandha Extract
Synonyms: Withania somnifera, ext.; Withania Somnefera Extract
CAS: 90147-43-6
Appearance: Brown
1-Octanol, also known as Capryl alcohol or n-Octanol, is a clear, colorless liquid with a characteristic waxy odor. It is an alcohol with eight carbon atoms in its chain, making it a part of the aliphatic alcohol family. This compound is poorly soluble in water but is miscible with ethanol, diethyl ether, and chloroform . It has a melting point of approximately -15??C and a boiling point of around 196??C . 1-Octanol is used in the production of esters, plasticizers, and as a solvent or intermediate in the synthesis of various organic compounds. It also finds application in the fragrance industry as a fixative in perfumes and can be used in the formulation of flavor and scent compositions . It is important to note that 1-Octanol is flammable and should be handled with care, storing it away from sources of ignition and heat .
Common English name: 5-iodo-2,3-dihydropyridazin-3-one
CAS No.: 825633-94-1
Molecular formula: C4H3IN2O
Molecular weight: 221.98
Sample: Available
Product name:HYDROXYPROPYL GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE
Purity:99%
Appearance:Light Yellow Powder
Package:Customized according to customer needs.
Sample:Available
