Product Identification

Product Name

2-Diazo-1,2-dihydro-1-oxonaphthalene-5-sulfonyl chloride

Synonyms

1,2-Naphthoquinonediazide-5-sulfonyl chloride
2-Diazo-1-naphthol-5-sulfonyl chloride
2-Diazo-1-naphthone-5-sulfonic acid chloride
5-(Chlorosulfonyl)-1,2-naphthoquinone-2-diazide
5-Chlorosulfonyl-2-diazonionaphthalen-1-olate
6-Diazo-5,6-dihydro-5-oxonaphthalene-2-sulphonyl chloride

CAS

3770-97-6

Formula

C10H5ClN2O3S

Molecular Weight

268.68

EINECS

223-211-1

RTECS

QK3686500

RTECS Class

Primary Irritant

Beilstein/Gmelin

NA

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes.

Eyes

Immediately flush with running water for at least 20 minutes.

Hazards Identification

Inhalation

Inhalation or contact with vapors, substance, or decomposition products may cause severe injury or death.

Skin

See Inhalation.

Eyes

See Inhalation.

Hazards

Vapors or dust may form explosive mixtures with air. Some may decompose explosively when heated or involved in a fire.

UN (DOT)

3043

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

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

Fire Fighting Measures

Fire Fighting

Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Flood fire area with water from a distance.

Fire Potential

Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact.

Accidental Release Measures

Small spills/leaks

ELIMINATE all ignition sources and combustible materials. Do not touch spilled material. Stop leak if you can do it without risk. Take up with inert, damp, noncombustible material using clean non-sparking tools and place into loosely covered plastic containers for later disposal.

Transport Information

UN Number

3043

Stability and Reactivity

Combustion Products

May produce irritating, toxic and/or corrosive gases.