Product Identification

Product Name

Ammonium iodide

Synonyms

Azanium iodide

CAS

12027-06-4

Formula

H4IN

Molecular Weight

144.94

EINECS

234-717-7

Merck

13,531

Beilstein/Gmelin

12984 (G)

Physical and Chemical Properties

Appearance

Odorless white solid. Turns yellow-brown on exposure to light and air.

Solubility in water

1670 g/L

Melting Point

551

Vapor Pressure

0.003 (112 C)

Density

2.51 g/cm3

Usage

In photographic chemicals.

First Aid Measures

Ingestion

If significant amount has been ingested, get medical attention.

Inhalation

Remove to fresh air.

Skin

Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.

Eyes

Flush with water.

Handling and Storage

Storage

Keep tightly closed and protected from light.

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

Inhalation

Inhalation causes irritation of nose and throat. Contact with eyes causes irritation.

Skin

Chronic oral administration can produce various skin reactions, including erythema nodosum, polymorphic eruptions, urticaria, vasculitis, and petechia.

Eyes

A metallic taste, increased salivary and bronchial secretions may be noted.

Ingestion

Acute ingestion of iodide salts does not result in corrosive actions on the gastrointestinal tract. Vomiting and abdominal pain may be noted but are not as common as with acute iodine ingestion.

Hazards

Toxic and irritating fumes of hydrogen iodide, iodine, and oxides of nitrogen may form in fire. Behavior in Fire: Compound may sublime in fire and condense on cold surfaces.

EC Risk Phrase

R 36/37/38

EC Safety Phrase

S 26 36

Exposure Controls/Personal Protection

Personal Protection

Dust mask; goggles or face shield; rubber gloves.

Respirators

Use NIOSH/MSA approved dust mask for ordinary use. SCBA for emergency use.

Exposure Effects

Cretinism and goiter have been reported in children whose mothers were taking iodides.

Poison Class

3

Fire Fighting Measures

Flash Point

405

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. Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Wear full protective equipment. Cover with dry sand or vermiculite. Mix well and carefully transfer to a container for subsequent disposal.

Stability and Reactivity

Stability

Becomes yellow to brown on exposure to air and light except in presence of stabilizer, such as ammonium hypophosphite, aqueous solution will quickly become yellow.

Incompatibilities

Strong oxidizing agents.

Decomposition

When heated to decomposition, emits very toxic fumes of hydrogen iodide, ammonia and nitrogen oxides.

Combustion Products

Toxic and irritating fumes of hydrogen iodide, iodine, and oxides of nitrogen may form in fire.