DimethoxymethaneCAS#109-87-5

Boiling point 

41-43 °C

density 

0.860 g/mL at 20 °C(lit.)

vapor density 

2.6 (vs air)

vapor pressure 

6.38 psi ( 20 °C)

refractive index 

n20/D 1.354

Fp 

-18 °C

storage temp. 

Store at <= 20°C.

solubility 

32.3 g/100 mL (16°C)

pka

3.1[at 20 ℃]

form 

Liquid

color 

Clear colorless

Odor

Mild, ethereal; chloroform-like.

PH

pH (12.5vol % , 25℃) : 4.5～6.6

explosive limit

1.6-17.6%(V)

Water Solubility 

32.3 g/100 mL (16 ºC)

Sensitive 

Moisture Sensitive

Merck 

14,6012

BRN 

1697025

Henry's Law Constant

(x 10-4 atm?m3/mol): 1.73 at 25 °C (Hine and Mookerjee, 1975)

Dielectric constant

2.7（20℃）

Exposure limits

NIOSH REL: TWA 1,000 ppm (3,100 mg/m3), IDLH 2,200 ppm; OSHA PEL: TWA 1,000 ppm; ACGIH TLV: TWA 1,000 ppm (adopted).

Stability:

Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point and wide explosive limits. Incompatible with strong oxidizing agents, strong acids. May form explosive peroxides upon exposure to air.

LogP

0

CAS DataBase Reference

109-87-5(CAS DataBase Reference)

NIST Chemistry Reference

Methane, dimethoxy-(109-87-5)

EPA Substance Registry System

Dimethoxymethane (109-87-5)

Risk Statements 

11-19-36-36/37/38

Safety Statements 

16-26-33-7/9-37/39

RIDADR 

UN 1234 3/PG 2

OEB

A

OEL

TWA: 1000 ppm (3100 mg/m3)

WGK Germany 

1

RTECS 

PA8750000

F 

21

Autoignition Temperature

459 °F

TSCA 

Yes

HS Code 

2911 00 00

HazardClass 

3

PackingGroup 

II

Hazardous Substances Data

109-87-5(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 6653 mg/kg

IDLA

2,200 ppm [10% LEL]