Product Identification

Product Name

1,2-Ethanedisulfonic acid

Synonyms

Allergosil
Ethane-1,2-disulfonic acid
Ethylenedisulfonic acid

CAS

110-04-3

Formula

C2H6O6S2

Molecular Weight

190.2

EINECS

203-732-0

Merck

12,3769

Beilstein/Gmelin

1781377

Beilstein Reference

4-04-00-00078

Physical and Chemical Properties

Solubility in water

Very soluble

Melting Point

172 - 174

Boiling Point

394

Partition Coefficient

-1.88

Usage

Base in hypnotics, sedatives.

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.

Eyes

Assure adequate flushing of the eyes by separating the eyelids with fingers.

Handling and Storage

Storage

Keep tightly closed. Store in a cool dry place.

Hazards Identification

Inhalation

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.

Skin

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.

Eyes

See Inhalation.

Ingestion

See Inhalation.

Hazards

Emits toxic fumes under fire conditions.

EC Risk Phrase

34

EC Safety Phrase

26 27 36/37/39 45

UN (DOT)

3261

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum).

Respirators

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

Exposure Effects

Corrosive. Causes burns.

Fire Fighting Measures

Fire Fighting

Extinguish using Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, Carbon dioxide, Sulfur oxides.

Combustion Products

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

Transport Information

UN Number

3261

Hazard Class

8

Packing Group

II