Product Name: | Iodine |
CAS NO: | 7553-56-2 |
EINECS: | 231-442-4 |
Molecular Formula: | I2 |
Molecular Weight: | 253.809 |
Melting Point: | 113 °C (lit.) |
Boiling Point: | 184 °C (lit.) |
Density: | 1.32 g/mL at 25 °C |
Appearance: | purple black spherical |
Storage: | Store in a cool, ventilated, dark warehouse. Keep away from heat and fire |
Identification |
specific optical rotation |
Qualified |
IR | ||
Gives reaction of chlorides |
||
Solution S
|
Meets the requirements | Qualified |
pH:3.0~4.5 | 4.1 | |
-121°~-128°
Specific optical rotation:-121°~-128° |
-121° | |
Loss on drying |
≤0.5% | 0.1% |
Residue on ignition: |
≤0.1% | 0.03% |
Related substances |
Each of impurities A,B,C,D ≤0.2% |
A: 0.02%, B: 0.01%,
C: 0.09%, D: 0.00% |
≤0.1%
Any other impurity≤0.1% |
0.01% | |
≤0.3%
Total impurities≤0.3% |
0.10% | |
Heavy metals |
≤0.002% | <0.002% |
Microbial limit | Bacteria ≤1000 per gram | Qualified |
Mold&yeast ≤100 per gram | ||
Escherichia Coli : no | ||
Assay |
98.5%~101.0% | 100.1% |
Storage |
Should be protected from light |
protected from light |