2-METHYL-1,3-PROPANEDIOL

PRODUCT IDENTIFICATION

CAS NO.

2163-42-0

2-METHYL-1,3-PROPANEDIOL

EINECS NO.

412-350-5

FORMULA HOCH2CH(CH3)CH2OH
MOL WT. 90.12
H.S. CODE

2905.39

TOXICITY

Oral, rat LD 50: >5000 mg/kg

SYNONYMS MPD; 1,3-Propanediol-2-methyl; Methyl Propanediol;

SMILES

proprietary hydroformulation of allyl alcohol

CLASSIFICATION

SOLVENT / DIOLS /

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white to Clear colourless liquid

MELTING POINT -54 C
BOILING POINT

212 C

SPECIFIC GRAVITY 1.015
SOLUBILITY IN WATER

soluble

pH

6.5

VAPOR DENSITY  
AUTOIGNITION

380 C

NFPA RATINGS

 

REFRACTIVE INDEX

 

FLASH POINT

127 C

STABILITY

Stable under ordinary conditions

APPLICATIONS

2-Methyl-1,3-Propanediol, clear liquid, is a non-symmetric aliphatic diol (two primary hydroxyl groups) with a methyl branch. It is an isomer of 1,3 Butylene Glycol. It has low viscosity and is miscible in water and alcohols. It remains in liquid even in cold temperatures due to its non-symmetrical molecular structure. It is used in the production of polyesters, polyurethane coatings, adhesives, sealants or elastomers required to keep transparency, weatherability and long stability. It is also used as an emulsifier and a humectant for the end applications of personal care products.
SALES SPECIFICATION

APPEARANCE

Clear colourless liquid

ASSAY

98.0% min

HYDROXYL GROUPS

1230 (mg KOH/g) min

ACID VALUE

0.05 (mg KOH/g) max

WATER

0.1% max

COLOR (APHA)

20 max

TRANSPORTATION
PACKING 200kgs in Drum
HAZARD CLASS not regulated
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 24/25

GENERAL DESCRIPTION OF 1,3-PROPANEDIOL

Glycol: any of a class of organic chemicals characterized by having separate two hydroxyl (-OH) groups, contribute to high water solubility, hygroscopicity and reactivity with many organic compounds, on usually linear and aliphatic carbon chain. The general formula is CnH2n(OH)2 or (CH2)n(OH)2. The broadened names include diols, dihydric alcohols, and dihydroxy alcohols. Ethylene glycol, HOCH2CH2OH, is the simplest member of the glycol family. Mono-, di- and triethylene glycols are the first three members of a homologous series of dihydroxy alcohols. Propylene glycol prepared by hydrolysis of propylene oxide and widely used as an ingredient of antifreeze and humectant in cosmetics is 1,2-propanediol indicating the two hydroxyl group position at 1,2, while trimethylene glycol is 1,3-propanediol with two hydroxyl group on the primary carbon atoms. 1,3-propanediol is called beta-propylene glycol. Trimethylene glycol is a clear, oily liquid; soluble in water; soluble in oxygenated solvents and completely soluble in alcohol; melting point -27 C; boiling point 210 C.

Trimethylene glycol has similar applications to Propylene glycol. It is can be used as a comonomer of unsaturated polyester resins, alkyd resins, polyester foams, polyester-based plasticizers, and as chain extender for polyurethane. It is a useful chemical intermediate which have two hydroxyl group on the primary carbon atoms and one alpha-carbon atom. 1,3-propanediol, or a derivative thereof, is used for the synthesis of lubricants, plasticizers, adhesives, photographic materials, pharmaceuticals, insect repellent, fragrances, antioxidant compound, antistatic agents, fabric softeners, and vitamin H.