Product Identification

Product Name

Acetoxyacetic acid

Synonyms

(Acetyloxy)acetic acid
2-Hydroxyacetic acid acetate
a-Acetoxyacetic acid
Acetylglycolic acid
Glycolic acid, acetate

CAS

13831-30-6

Formula

C4H6O4

Molecular Weight

118.09

EINECS

237-541-9

Physical and Chemical Properties

Solubility in water

144 g/L

Melting Point

67 - 69

Boiling Point

261

Vapor Pressure

0.0034 (25 C)

Density

1.274 g/cm3 (20 C)

pKa/pKb

2.69 (pKa)

Partition Coefficient

-.19

Heat Of Vaporization

54.94 kJ/mol

First Aid Measures

Ingestion

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

Inhalation

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

Skin

In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.

Eyes

In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage

Keep tightly closed. Store in a cool dry place.

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing. Faceshield (8-inch minimum).

Respirators

Wear appropriate government approved respirator.

Exposure Effects

Harmful if swallowed, inhaled, or absorbed through skin. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. Inhalation may result in spasm, inflammation and edema of the larynx and bronchi, chemical pneumonitis, and pulmonary edema. Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin.

Fire Fighting Measures

Flash Point

103

Fire Fighting

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

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

Incompatibilities

Strong oxidizing agents, Strong bases.

Decomposition

Oxides of carbon.

Transport Information

UN Number

3261

Hazard Class

8

Packing Group

II

Hazards Identification

Hazards

Emits toxic fumes under fire conditions.

EC Risk Phrase

34

EC Safety Phrase

26 27 28 36/37/39 45

UN (DOT)

3261