Phosphorous acid
Phosphorous acid
- CAS:
- 13598-36-2
- MF:
- H3O3P
- MW:
- 82
Suppliers by country/region
Company Type
Properties
- Melting point:
- 73 °C
- Boiling point:
- 200 °C
- Density
- 1.651 g/mL at 25 °C(lit.)
- vapor pressure
- 0.001Pa at 20℃
- Flash point:
- 200°C
- storage temp.
- 0-6°C
- solubility
- DMSO (Slightly), Methanol (Slightly), Water (Sparingly)
- form
- Crystals
- pka
- pK1 1.29; pK2 6.74(at 25℃)
- Specific Gravity
- 1.651
- color
- White
- PH
- pKa1= 1.10, pKa2 = 6.33(25℃)
- Water Solubility
- SOLUBLE
- Sensitive
- Air Sensitive & Hygroscopic
- Merck
- 14,7346
- Stability:
- Stable. Incompatible with strong bases. Hygroscopic.
Safety Information
- Symbol(GHS)
GHS05,GHS07
- Signal word
- Danger
- Hazard statements
- H290-H302-H314
- Precautionary statements
- P234-P270-P280-P301+P312-P303+P361+P353-P305+P351+P338
- Hazard Codes
- C
- Risk Statements
- 22-35
- Safety Statements
- 26-36/37/39-45
- RIDADR
- UN 2834 8/PG 3
- WGK Germany
- 1
- RTECS
- SZ6400000
- F
- 3
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- III
- HS Code
- 28092019
Use
Phosphorous acid is used to produce the fertilizer phosphate salt like potassium phosphite, ammonium phosphite and calcium phosphite. It is actively involved in the preparation of phosphites like aminotris(methylenephosphonic acid) (ATMP), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic Acid (PBTC), which find application in water treatment as a scale or corrosive inhibitor. It is also used in chemical reactions as a reducing agent. Its salt, lead phosphite is used as PVC stabilizer. It is also used as a precursor in the preparation of phosphine and as an intermediate in the preparation of other phosphorus compounds.
27 India supplier list of "Phosphorous acid"
![](/images/pro-3.jpg)
- Product Name:Phosphorous acid, 98%
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorous acid
- Products Intro:Purity: 98% | Package: 20KG;INR
- Company Type: Manufacturer
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorous Acid
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorous acid
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorous acid
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorousacidsolution
- Products Intro:Brand:sigma aldrich | Product Number:04115 | Purity:≥50%
- Company Type: Trader
- Country/Region: INDIA
![](/images/pro-3.jpg)
- Product Name:Phosphorous acid
- Company Type: Trader
- Country/Region: INDIA