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  • Product NameIodine
  • Molecular FormulaI2
  • Purity99%
  • AppearanceGrey to purple solid

Product Details

Quick Details

  • CasNo: 7553-56-2
  • Molecular Formula: I2
  • Appearance: Grey to purple solid
  • Purity: 99%

High Quality Food Additive Lodine 7553-56-2 Cheap Price

7553-56-2 Name




IodineFlakes,99.998%;Iodine,Resublimed,99.5%;Iodine(Resublimed)ExtraPure;Iodine, 99+%;NLT99,5%orrefined;Iodinespheres,ultradry,-60mesh,99.999%(metalsbasis);Iodine, 0.1 N standard solution;Iodine, for analysis ACS, 99.8+%


7553-56-2 Chemical & Physical Properties

Melting point 

113 °C(lit.)

Boiling point

184.4±9.0 °C at 760 mmHg


3.8±0.1 g/cm3

Molecular Formula


Molecular Weight




Exact Mass


Vapour density

9 (vs air)

Vapour Pressure

0.5±0.4 mmHg at 25°C

Index of Refraction


Water Solubility

0.3 g/L (20 ºC)


7553-56-2 Description

Iodine was discovered in 1811 by Bernard Courtois, and is classed among the rarer elements. Iodine is found naturally in seaweed, and is considered and generally recognized as safe substance by the US Food and Drug Administration (FDA). Iodine is a required element by many species, including humans. It has been recognized as preventative against goiter since 1819, and is used in iodized salt for this purpose. Iodine is also used as a dough oxidizer in commercial bread making. Iodine is generally extracted from natural and oil field brines by means of oxidation of iodide with chlorine, then removal from solution with an airstream. Iodine is reabsorbed in solution and reduces to hidrotic acid with sulfur dioxide. The solution is then chlorinated to precipitate free iodine, and is further purified by treatment with concentrated sulfuric acid. Iodine is the heaviest essential element for most life, with tungsten being used by some bacteria.


7553-56-2 Uses

  1. Mainly used to manufacture iodide, pesticides, feed additives, dyes, iodine tincture, test paper, drugs, etc.
  2. Used as electronic industry materials and high purity reagents.
  3. Used for capacity analysis and colorimetric analysis.
  4. Used for the basic raw material for making inorganic iodide and organic iodide. It is mainly used in medical and health care to manufacture all kinds of iodine preparations, fungicides, disinfectants, deodorants, analgesics and antidote of radioactive substances. Used for the synthesis of dyes, smoke extinguishing agent, photographic emulsion and antibacterial agent of cutting oil emulsion in industry;
  5. Used to manufacture electronic instrument such as single crystal prism, optical instrument such as polarizer and a glass being capable of transmitting through infrared rays;
  6. Used for leather and special soap. Iodine is a good catalyst in organic synthesis reactions of methylation, isomerization and dehydrogenation;
  7. Used as a separating agent for alkanes and olefins;
  8. Used as a stabilizer for rosin, tall oil and other wood products;
  9. Used as a refining agent  for high purity zirconium, titanium, hafnium, silicon and germanium;
  10. Used to formulate equivalent solvent, determinate iodine value, calibrate concentration of sodium thiosulfate solution.




7553-56-2 Relevant articles



Variable dimensionality in 'hollow' hybrid tin iodide perovskites


Lightfoot, Philip,McNulty, Jason A.,Slawin, Alexandra M. Z.

, p. 15171 - 15174 (2020)

Two 'hollow' B-site deficient perovskites, (TzH)11(H3PO2)Sn6I23 and (TzH)3Sn2I7 (TzH+ = 1,2,4-triazolium, H3PO2 = hypohosphorous acid), have been prepared. (TzH)11(H3PO2)Sn6I23 is the first example of a 2D layered structure of this type. Leaving the same reaction mixture for an extended time also affords the 3D derivative (TzH)3Sn2I7.




, p. 228 - 231 (1988)

A new class of layered alkali metal-MoO//3 bronzes, A//xMoO//3 (A equals Li, Na, K, Rb), with nearly the same unit cell parameters as the host oxide has been synthesized. This was accomplished by the solid state reaction of MoO//3 with alkali metal iodides around 575 K; Li//xMoO//3 absorbs H//2O causing an increase in the b parameter of the unit cell. Hexagonal potassium bronzes of W//1// minus //xMo//xO//3 are synthesized for the first time.


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