Ammonium iodide Property

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

PH

4.5-6.5 (20℃, 5%)

Odor

Odorless

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

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26

WGK Germany 

3

F 

3-8-10-23

TSCA 

Yes

HS Code 

28276000

Hazardous Substances Data

12027-06-4(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

Ammonium iodide Chemical Properties,Usage,Production

Description

Ammonium iodide (chemical formula：NH4I) is an inorganic compound consisting of ammonium and iodide. It can be prepared by the reaction between hydroiodic acid (or hydrogen iodide gas) with ammonia or ammonia hydroxide. It can be used in photographic chemicals and some medications. It can also be supplemented to many animal feed formulations as a dietary source of Iodine. It can be added to a release agent and being capable of increasing the throughput and success rate due to smoother bead release process, reducing damage to platinum ware due to forced bead release as well as reducing crucible cleaning requirement.

References

http://www.newalliance.co.in/prodhtml/Fine%20Chemicals/Bromides/B009%20Ammonium%20Iodide.html
https://en.wikipedia.org/wiki/Ammonium_iodide
http://www.xrfscientific.com/products/release-agent/

Chemical Properties

white to light yellow crystalline powder

Uses

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

Uses

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.

Uses

In photographic chemicals.

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.]