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Potassium iodide

CAS number : 7681-11-0

Molecular weight :165.99

Molecular formula/chemical symbol :KI

Description :
Colorless or white cubic crystal. Density: 3.13 g / 3 cm. Melting point: 686 ℃ boiling point: 1330 ℃. Solution: it is easy to dissolve in the water, ethanol, acetone and glycerin, aqueous solution in the light turn yellow, and precipitation free iodine. Taste, smell, taste salty, with bitter; Other: potassium iodide solution is neutral or alkalescence.

USES :

1, potassium iodide and dye is preparation of raw materials. Used as a photosensitive emulsifier, food additives, iodine and some insoluble metal iodide of cosolvent. Also can be used for analysis reagent, chromatographic analysis and point pain analysis. Potassium iodide as stabilizer and cosolvent, feed grade of potassium iodide also can do as a feed processing of iodine supplements.

2, potassium iodide can also measure ozone concentration, swap out iodine make starch blue, reaction is as follows: O3 ki + H2O + 2 = 2 koh + O2 + I2

3, the so-called iodize edible salt is in the common salt (pure sodium chloride) to add potassium iodide or potassium iodate (according to the proportion of one over twenty thousand). Potassium iodide in dermatology field have some special purpose. The mechanism of action of it is due in part to enhance the necrotic tissue and the dissolution of digestive function. Potassium iodide also have antifungal activity.

Keywords:Surface treatment chemicals

Report :

Product name

Product name

CAS: 7681-11-0

Apearance

Colorless or white cubic crystal

chemical formula

KI

items

guarantee reagent

(GR)

analytically pure

(AR)

chemically pure(CP)

contentKl),%   ≥

99.5%

99%

98.0%

pH(50g/Lsolution25 )

6.0-8.0

6.0-8.0

6.0-8.0

water insoluble

,%  ≤

0.005

0.01

0.02

Chloride and bromide (Cl meter), % or less

0.01

0.02

0.05

clarity test

qualified

qualified

qualified

Iodate and iodine (in IO3 meter) or less

0.0003

0.002

0.005

(Fe),%   ≤

0.0001

0.0003

0.0005

Heavy metal (Pb meter), %

0.0002

0.0005

0.001

Reducing material

qualified

qualified

--

(As),% ≤

0.00001

0.00002

--

(Ba),%  ≤

0.001

0.002

0.004

(Ca),%  ≤

0.001

0.002

0.005

(Mg),% ≤

0.001

0.002

0.005

(Na),% ≤

0.05

0.1

--

total nitrogen(N),% ≤

0.001

0.002

0.002

(PO4),% ≤

0.001

0.002

--

(SO4),% ≤

0.002

0.005

0.01