8.20775

Methyl methanesulfonate

for synthesis

• Synonym(s): Methyl methanesulfonate, Methanesulfonic acid methyl ester, MMS
• 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

Properties

• 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

Description

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.

Safety Information

• pictograms: GHS06,GHS08,GHS09
• signalword: Danger
• hcodes: H301 - H315 - H317 - H319 - H340 - H351 - H361fd - H373 - H411
• pcodes: P202 - P273 - P280 - P301 + P310 - P302 + P352 - P305 + P351 + P338
• 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: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• wgk_germany: WGK 3
• flash_point_f: 219.2 °F - closed cup
• flash_point_c: 104 °C - closed cup