PRODUCT: 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. | 30ppm max. | 50 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).
Phosphorous acid 98.5%min