Phosphorous Acid
Identification
Synonyms:
Orthophosphorous
acid; phosphonic acid
De: Phosphonsäure
ES: Ácido fosfónico
Fr:Acide phosphonique
CAS No.: 13598-36-2
EC No.:
233-663-1
Molecular Weight: 81.996
Molecular Formula:
H3PO3
Structural
Formula: 
Density: 1.6510
M.P.:
73.6°C
B.P.:
200°C (decomposing at 180°C)
Application
Phosphorous acid is used in synthesis of phosphite salts, plastic stabilizers,
pesticides, water-treatment chemicals, phosphite fertilizers
for fruits like citrus and orange, vegetables, economic crops etc. , cosmetics
additives.
Specification*
Parameters
|
Specification
|
| |
Grade
I |
Grade II |
Grade III |
70% Solution |
|
Phosphorous
acid Purity
|
99.0%
min.
|
98.5% |
98.5% min. |
70% min. |
|
Chloride
(Cl-)
|
5ppm max.
|
20ppm max. |
0.01% max. |
5ppm max. |
|
Iron
(Fe)
|
5ppm
max.
|
20ppm max. |
30 ppm max. |
5ppm max. |
|
Sulfate
(SO42-)
|
5ppm
max.
|
20ppm max. |
60 ppm max. |
5ppm max. |
|
Phosphate
(PO43-)
|
0.1%
max.
|
0.2% max. |
0.3% max. |
0.1% max. |
|
Test
of 70% water solution |
colorless |
colorless |
- |
- |
|
Odor |
odorless |
odorless |
characteristic |
odorless |
|
Appearance
|
white crystals
|
white crystals |
white crystals |
clear colorless
liquid |
Standard Packing
1) 25kgs/PP woven bag with double PE inner bags, 20~25mt/20' FCL
2) 500, 1000kgs/jumbo bag, 20mt/20' FCL
3) Iron drum or Plastic drum
4) For 70% solution, packing is 25kg/plastic pail,
250kg/plastic drum or 1300kg/IBC
Risks and Safety Info
Class 8; UN2834; PG III
R 22 Harmful if swallowed.
R 35 Causes severe burns.
S 26 In case of contact with eyes, rinse immediately with plenty of water
and seek
medical advice.
S 36/37/39 Wear suitable protective clothing, gloves and eye/face
protection.
S 45 In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
|
