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A5009612

Iodine , ACS,≥99.8% , 7553-56-2

CAS NO.:7553-56-2

Empirical Formula: I2

Molecular Weight: 253.81

MDL number: MFCD00011355

EINECS: 231-442-4

Update time: 2022-07-08

PRODUCT Properties

Melting point: 113 °C (lit.)
Boiling point: 184 °C (lit.)
Density  1.32 g/mL at 25 °C
vapor density  9 (vs air)
vapor pressure  0.31 mm Hg ( 25 °C)
Flash point: <10℃
storage temp.  Store at RT.
solubility  Miscible with chloroform, carbon tetrachloride, carbon disulfide, cyclohexane, methanol, ethyl acetate, toluene, benzene, n-hexane, butan-2-ol, bromoethane, n-heptane, glycerol and diethyl ether.
form  particles (round)
Specific Gravity 4.93
color  Red-brown
Odor Sharp, characteristic odor
PH 5.4 (H2O)(saturated solution)
Resistivity 1.3E15 μΩ-cm
Water Solubility  0.3 g/L (20 ºC)
Crystal Structure Rhombic
Merck  14,5014
BRN  3587194
Exposure limits Ceiling 0.1 ppm (~1mg/m3) (ACGIH, MSHA, OSHA, and NIOSH); IDLH 10 ppm (NIOSH).
InChIKey PNDPGZBMCMUPRI-UHFFFAOYSA-N
LogP 2.49 at 20℃
CAS DataBase Reference 7553-56-2(CAS DataBase Reference)
NIST Chemistry Reference Iodine(7553-56-2)
EPA Substance Registry System Iodine (7553-56-2)

Description and Uses

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.

Synthesis of organic chemicals; photographic film; as a disinfectant in drinking water

Safety

Symbol(GHS) 
GHS07,GHS08,GHS09
Signal word  Danger
Hazard statements  H302+H312+H332-H315-H319-H335-H372-H400
Precautionary statements  P273-P280-P301+P312-P302+P352+P312-P304+P340+P312-P314
Hazard Codes  Xn,N,F
Risk Statements  36/37/38-50-20/21-36/38-20/21/22-22-40-19-11-36/37
Safety Statements  26-61-25-23-36/37-16
RIDADR  UN 2056 3/PG 2
OEL Ceiling: 0.1 ppm (1 mg/m3)
WGK Germany  2
RTECS  NN1575000
10
TSCA  Yes
HS Code  2801 20 00
HazardClass  8
PackingGroup  III
Hazardous Substances Data 7553-56-2(Hazardous Substances Data)
Toxicity LD50 oral (rat)
14,000 mg/kg
LCLO inhal (rat)
80 ppm (800 mg/m3; 1 h)
PEL (OSHA)
0.1 ppm (ceiling, 1 mg/m3)
TLV-TWA (ACGIH)
0.1 ppm (ceiling, 1 mg/m3)
IDLA 2 ppm

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