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Key Documents

Safety Information

8.20775

Sigma-Aldrich

Methyl methanesulfonate

for synthesis

Synonym(s):

Methyl methanesulfonate, Methanesulfonic acid methyl ester, MMS

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About This Item

Empirical Formula (Hill Notation):
C2H6O3S
CAS Number:
66-27-3
Molecular Weight:
110.13
MDL number:
MFCD00007557
UNSPSC Code:
12352103
EC Index Number:
200-625-0
Pricing and availability is not currently available.

vapor pressure

0.8 hPa ( 59 °C)

Assay

≥99.0% (GC)

form

liquid

potency

225 mg/kg LD50, oral (Rat)

bp

203 °C/1013 hPa

mp

20 °C

transition temp

flash point 104 °C

density

1.30 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C2H6O3S/c1-5-6(2,3)4/h1-2H3

InChI key

MBABOKRGFJTBAE-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.298 - 1.299
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Chronic 2 - Carc. 2 - Eye Irrit. 2 - Muta. 1B - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation

Target Organs

Lungs

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

219.2 °F - closed cup

Flash Point(C)

104 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Flammable liquids
Type 3 petroleums
Hazardous rank III
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

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