Ammonium iodide

CAS NO.：12027-06-4
Empirical Formula: H4IN
Molecular Weight: 144.94
MDL number: MFCD00011424
EINECS: 234-717-7
SAFETY DATA SHEET (SDS)
Update Date: 2025-12-17 09:49:16

What is Ammonium iodide?

Chemical properties

white to light yellow crystalline powder

The Uses of Ammonium iodide

White crystals made by the action of ammonium hydroxide on hydroiodic acid followed by crystallization. Soluble in water and alcohol, ammonium iodide was used as a halide in collodion formulas, particularly in situations where it was needed for use immediately. Ammonium iodide decomposes quickly when mixed with plain collodion, releasing iodine.

The Uses of Ammonium iodide

It is used in photographic chemicals and some medications. It is a catalyst for dethioacetalization reaction.

The Uses of Ammonium iodide

In photographic chemicals.

What are the applications of Application

Ammonium iodide is an iodide salt used as a reagent and expectorant

Definition

ChEBI: The iodide salt of ammonia.

General Description

Odorless white solid. Sinks and mixes with water.

Air & Water Reactions

Water soluble.

Reactivity Profile

Ammonium iodide is light sensitive, becomes yellow or brown on exposure to air and light because of liberation of Iodine [Merck 11th ed. 1989]. Bromine trifluoride reacts explosively with the following ammonium bromide, ammonium chloride, Ammonium iodide [Mellor 2 Supp. 1:165 1956].

Health Hazard

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

Flammability and Explosibility

Not classified

Purification Methods

The iodide crystallises from EtOH on addition of ethyl iodide, and is very hygroscopic. Store it in the dark. Its solubility is 177g in 100g of H2O at 25o. [Schmeisser in Handbook of Preparative Inorganic Chem (Ed. Brauer) Academic Press Vol I p 289-290 1963.]

Properties of Ammonium iodide

Melting point:	551 °C (lit.)
Boiling point:	405°C (estimate)
Density	2.51
vapor pressure	1 mm Hg ( 210.9 °C)
refractive index	1.7031
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	ethanol: slightly soluble(lit.)
form	Granular
pka	0.31±0.70(Predicted)
Specific Gravity	2.514
color	White to pale yellow
Odor	Odorless
PH	4.5-6.5 (20℃, 5%)
PH Range	4.5 - 6.5
Water Solubility	Soluble in water, ethanol, methanol, acetone, ammonia and glycerol. Slightly soluble in ether.
Sensitive	Light Sensitive & Hygroscopic
Merck	14,529
Exposure limits	ACGIH: TWA 0.01 ppm
CAS DataBase Reference	12027-06-4(CAS DataBase Reference)
NIST Chemistry Reference	Ammonium iodide(12027-06-4)
EPA Substance Registry System	Ammonium iodide ((NH4)I) (12027-06-4)

Safety information for Ammonium iodide

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.