Product Identification

Product Name

Nitrilotriacetic acid

Synonyms

2-(Bis(carboxymethyl)amino)acetic acid
Complexon I
N,N-bis(Carboxymethyl)glycine
Triglycine
Triglycollamic acid
Versene NTA acid

CAS

139-13-9

Formula

C6H9NO6

Molecular Weight

191.14

EINECS

205-355-7

RTECS

AJ0175000

RTECS Class

Tumorigen; Mutagen

Merck

12,6675

Beilstein/Gmelin

1710776

Beilstein Reference

4-04-00-02441

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

Odorless white solid.

Solubility in water

1.3 g/L

Melting Point

242

Boiling Point

498

Vapor Pressure

3E-11 (25 C)

Density

1.67 g/cm3

pKa/pKb

1.84 (pKa)

Partition Coefficient

-1.76

Heat Of Vaporization

83.9 kJ/mol

Heat Of Combustion

-2335 kJ/mol

Usage

Chelating and sequestering agent.

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.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. DO NOT use mouth-to-mouth respiration.

Skin

Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Dust is irritating to the respiratory tract.

Skin

Dust may cause mechanical irritation.

Eyes

Dust may cause mechanical irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause kidney damage. May be harmful if swallowed.

EC Risk Phrase

R 45 22 36/37

EC Safety Phrase

S 53 45

UN (DOT)

2811

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Possible cancer hazard based on tests with laboratory animals. May cause kidney injury.

Poison Class

4

Fire Fighting Measures

Flash Point

255

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of nitrogen, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

UN Number

2811

HS Code

2922 49 95