Product Identification

Product Name

Alkanesulfonic acid

Synonyms

MCAT 1201
Methylsulfonic acid
MSA

CAS

75-75-2

Formula

CH4O3S

Molecular Weight

96.11

EINECS

200-898-6

RTECS

PB1140000

RTECS Class

Agricultural Chemical and Pesticide; Mutagen

Merck

13,5981

Beilstein/Gmelin

1446024

Beilstein Reference

4-04-00-00010

EC Index Number

607-145-00-4

EC Class

Corrosive

Physical and Chemical Properties

Appearance

Colorless liquid at room temperature or white crystalline solid below 20 deg C.

Solubility in water

Very soluble

Melting Point

20

Boiling Point

217

Vapor Pressure

0.0004 (25 C)

Density

1.502 g/cm3 (0 C)

pKa/pKb

Strong acid

Partition Coefficient

-.9

Usage

Catalyst in esterification, alkylation, olefin polymerization, peroxidation reactions, chemical intermediate to form secondary methane sulfonates from olefins, chemical intermediate for trifluoromethane sulfonic acid, methane sulfonyl chloride, as solvent.

Vapor Density

>AIR

Refractive Index

1.424 (25 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure. Destroy contaminated shoes.

Eyes

Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Handling and Storage

Storage

Store in a tightly closed container. Keep under an argon blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Wash clothing before reuse. Discard contaminated shoes.

Hazards Identification

Inhalation

Causes severe respiratory tract irritation.

Skin

Contact with liquid is corrosive and causes severe burns and ulceration.

Eyes

Contact with liquid is corrosive to the eyes and causes severe burns.

Ingestion

Harmful if swallowed. Causes gastrointestinal tract burns.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 34

EC Safety Phrase

S 26 36 45

UN (DOT)

2586

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.

Poison Class

2

Fire Fighting Measures

Flash Point

189

Autoignition

> 500

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Reacts violently with water. Extinguishing media: Use dry chemical, carbon dioxide, or alcohol-resistant foam. Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Provide ventilation. Do not get water inside containers.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Moisture, HF, Bases, Amines, Strong reducing agents, corrodes steel, ethylvinyl ether, iron, copper, brass, lead.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, oxides of sulfur, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2586

Hazard Class

8

Packing Group

III

HS Code

2904 10 00