2-methyl-1,3-propanediol

Description

2-methyl-1,3-propanediol · CAS 2163-42-0 · C4H10O2. UNII N8F53B3R4R. Boiling Point: 211 °C; Melting Point: -91 °C; Flash Point: 127 °C.

Identification

CAS Registry Number	2163-42-0
PubChem CID	75103
Molecular formula	C4H10O2
IUPAC name	2-methylpropane-1,3-diol
UNII (FDA)	N8F53B3R4R

Computed Descriptors

Molecular Weight	90.12
XLogP3	-0.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	2
Exact Mass	90.068079557
Monoisotopic Mass	90.068079557
Topological Polar Surface Area	40.5
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	211 °C
Melting Point	-91 °C
Flash Point	127 °C
Flash Point	127 °C (261 °F) - closed cup
Density	1.015 g/ cu cm at 25 °C
Vapor Density	3.11
Vapor Pressure	0.02 [mmHg]
Vapor Pressure	2.1X10-2 mm Hg at 25 °C
LogP	log Kow = 0.24 at 20 °C
Surface Tension	72.2 mN/m at 20 °C

Physical description & handling notes

• Liquid; CBI
• Colorless liquid; [HSDB] Very faintly yellow-green liquid; [MSDSonline]
• Liquid
• Clear, colorless liquid
• Little or no odor
• In water, greater than or equal to 3000 mg/L at 25 °C

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (Methylpropanediol) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	99.5% (196 / 197)

GHS Hazard Classification

GHS notification summary	99.5% (196 / 197)

Documented Uses

• CIR ingredient: Methylpropanediol
• Used as a solvent glycol in personal care products (neutralizer, emollient, emulsifier, and humectant); in the manufacture of resins and coatings; [HSDB]
• Used as a solvent glycol (~25%) in personal care products (neutralizer, emollient, emulsifier, and humectant) as well as in the manufacture of resins and coatings (~75%).
• Solvent for ink, toner, and colorant products
• EPA Safer Chemical Functional Use Classes -> Solvents
• Safer Chemical Classes -> Green half-circle - The chemical is expected to be of low concern

Synonyms

2-Methyl-1,3-propanediol; 2163-42-0; methylpropanediol; 1,3-Propanediol, 2-methyl-; N8F53B3R4R; .BETA.-HYDROXYISOBUTANOL; HSDB 7267; MP Diol; RefChem:818687; 1,3Propanediol, 2methyl; BETA-HYDROXYISOBUTANOL; 1,3-propanediol, 2-methyl; METHYLPROPANEDIOL [INCI]; LESONEL FORMING FEMININE WASH; 1,3-PROPANEDIOL, 2-METHYL-[HSDB]; 412-350-5

Frequently Asked Questions

What are the CAS number and molecular formula of 2-methyl-1,3-propanediol?

CAS 2163-42-0; molecular formula C4H10O2; molecular weight — g/mol.

What other names is 2-methyl-1,3-propanediol known by?

2-Methyl-1,3-propanediol, 2163-42-0, methylpropanediol, 1,3-Propanediol, 2-methyl-, N8F53B3R4R, .BETA.-HYDROXYISOBUTANOL.

What is the regulatory status of 2-methyl-1,3-propanediol?

Documented regulatory listings: CIR / INCI: Cosmetic ingredients (Methylpropanediol) -> CIR (Cosmetic Ingredient Review).

Is 2-methyl-1,3-propanediol classified as hazardous?

99.5% of GHS notifications report no hazard classification (196 of 197).

What are the key physical properties of 2-methyl-1,3-propanediol?

Boiling Point: 211 °C; Melting Point: -91 °C; Flash Point: 127 °C; Flash Point: 127 °C (261 °F) - closed cup.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.