Product Identification

Product Name

m-CPBA

Synonyms

3-Chlorobenzenecarboperoxoic acid
m-Chloroperbenzoic acid
m-Chloroperoxybenzoic acid
MCPBA

CAS

937-14-4

Formula

C7H5ClO3

Molecular Weight

172.57

EINECS

213-322-3

RTECS

SD9470000

RTECS Class

Tumorigen

Beilstein/Gmelin

608317

Beilstein Reference

4-09-00-00972

Physical and Chemical Properties

Appearance

White powder with a slight, pungent odor.

Solubility in water

Insoluble

Melting Point

88

Boiling Point

265

pKa/pKb

7.14 (pKa)

Partition Coefficient

1.68

Usage

Used widely as an oxidant in organic synthesis.

First Aid Measures

Ingestion

If conscious, immediately induce vomiting.

Inhalation

Remove to fresh air. If not breathing, give artificial respiration. If breathing is dificult, give oxygen.

Skin

Immediately flush eyes with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Immediately flush with running water for at least 20 minutes.

Handling and Storage

Storage

Stable under normal temperatures and pressures.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May be harmful if swallowed.

Inhalation

May cause irritation.

Skin

May cause irritation.

Eyes

May cause irritation.

Hazards

May explode from heat, shock, friction or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect. Containers may explode when heated. Runoff may create fire or explosion hazard.

EC Risk Phrase

R 5 8 36/37/38

EC Safety Phrase

S 17 26 36

UN (DOT)

2755

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective clothing, gloves and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Fire Fighting Measures

Fire Fighting

SMALL FIRES: Water spray or fog is preferred; if water not available use dry chemical, carbon dioxide or regular foam. LARGE FIRES: Flood fire area with water from a distance. Use water spray or fog; do not use straight streams. Move containers from fire area if you can do it without risk. Do not move cargo or vehicle if cargo has been exposed to heat. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Fire Potential

May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect.

Accidental Release Measures

Small spills/leaks

ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Keep substance wet using water spray. Stop leak if you can do it without risk. SMALL SPILLS: Take up with inert, damp, noncombustible material using clean non-sparking tools and place into loosely covered plastic containers for later disposal.

Stability and Reactivity

Incompatibilities

Nickel, iron, manganese oxide, acids, metals and metal compounds, nitrides,combustible and flammable materials, oxidizing agents, reducing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Strong oxidizer. Contact with other material may caues fire. Keep from contact with clothing and other combustible materials.

Combustion Products

Chlorine and chlorine oxides.

Transport Information

UN Number

2755

Hazard Class

5.2