| Chemical Formula |
HI |
| |
CAS No. 10034-85-2 |
| |
|
| Molecular Weight |
127.91 |
| |
|
| Properties |
|
| Specific gravity |
d 1.7 (57% aqueous solution) |
| Boiling point |
126.5ºC (56.7%,
746 mmHg) |
| Decomposition: |
Stable
in the absence of oxygen even in light. In the presence
of oxygen, easily decomposed to form free iodine, turns
yellow or red color. |
| |
| Appearance |
Yellow color
liquid (57% aqueous solution) |
| |
| Reactivity |
It reacts
with many metals to generate hydrogen and to form the
metal iodides. It acts as a reducing agent on organic
compounds. |
| |
| Specifications |
| Item |
ISE Standard |
JIS K8917-1975 Special
Class |
| Nonvolatile constituents |
0.01% max. |
0.01% max. |
| Combustion residue (Sulfate) |
0.005% max. |
0.005% max. |
| Hydrochloric acid/ Hydrobromic
Acid (as CI) |
0.01% max. |
0.01% max. |
| Sulfates (SO4)
|
0.003% max. |
0.003% max. |
| Phosphates (PO4) |
0.001% max. |
0.001% max. |
| Heavy metals (as Pb) |
0.001% max. |
0.001% max. |
| Iron (Fe) |
0.0005% max. |
0.0005% max. |
| Arsenic (As) |
0.0001% max. |
0.0001% max. |
| Free iodine (I) |
0.06% max. |
0.76% max. |
| Sulfide |
---
|
To pass test |
| Appearance |
(Slightly red) |
| Assay |
A: 56% min. |
55 ~ 58% |
| |
B: 57% min. |
|
| |
| Packaging |
| Outside packing |
Special plastic container
(20l) |
| Net weight |
30 kg (Sealed with nitrogen
gas) |
|
|
| Applications |
Reducing
agent
Iodide synthesis material
Germicides
Medicines
Preparation of inorganic iodides (KI, NaI, NH4I, AgI,
etc.)
Preparation of inorganic iodides (iodobenzoic acids or
similar compounds for X-ray contrast intermediates, aliphatic
iodides, etc.)
Disinfectant and Sanitizer formulations |
| |
| Health
Hazards |
1)
Fire and explosion: Non-explosive; Water sprinkling is
advised to extinguish fire.
2) Gas generation: HI fumes
3) Others Strong mono-basic acid |
| |
| Toxicity
|
| Toxic. Irritates eyes
and skin. Fumes containing 0.15 to 0.2 ppm will cause
Pain. Fumes and 0.3 ppm will cause un-endurable pain,
higher concentrations will cause pulmonary oedema and
death. |
| |
| First
aid |
1)
Rinse eyes with water immediately.
2) Wash contaminated skin areas with soap and dilute aqueous
sodium carbonate solution.
3) When taken orally, wash the stomach a 5% aqueous solution
of calcium chloride, and administer a self-containing
purgative.
4) Oxygen inhalation, and calcium-rich food have been
found effective. |
| |
| Handling
& Storage |
1)
Tightly seal the container and store in a cool, dark,
well ventilated place
2) Use rubber gloves, fully body protection garments and
gas mask.
3) Mixing and contact hazardous materials: Alkali
metals |
| |
| Spillage |
| Diluted with
water, then cover spilled hydroiodic acid with sodium
bicarbonate or a mixture of soda ash and slaked lime (50
: 50). Mix together, and add water if necessary to produce
a slurry. Collect the slurry into a container, and wash
contaminated surfaces with a large amount of water. |
| |
