Inorganic acids
PHOSPHOROUS ACID CRYSTALS Extra Pure
"Store at 15–25°C" Phosphonic acid
- Article code
- 5256D
- CAS
- 13598-36-2
- Grade
- Extra Pure
- Purity
- 98%
- Category
- Inorganic acids
Specification and availability are confirmed by Chemical Suppliers when you inquire. Product details are attached to your request automatically.
Properties
- Article No.
- 5256D
- Grade
- Extra Pure
- Purity
- 98%
- CAS No.
- 13598-36-2
- Molecular Formula
- H3PO3
- Molecular Weight
- 82.00
- H.S. Code
- 2811.1990
- Shelf Life
- 60 Months
Product information
| Article No. | 5256D | Grade | Extra Pure |
| Purity | 98% | CAS No. | 13598-36-2 |
| Molecular Formula | H3PO3 | Molecular Weight | 82.00 |
| H.S. Code | 2811.1990 | Shelf Life | 60 Months |
Physical Properties
| Physical state at 20 °C | Solid | Colour | Colorless crystals |
| Odour | Odorless | pH value | 1 |
| Melting point/ Freezing point [°C] | 73°C | Boiling point [°C] | 200°C |
| Vapour pressure [20°C] | < 1 hPa at 20 °C | Density [g/cm3] | 1.651 |
| Solubility in water [% weight] | Soluble in water |
Specifications
| Appearance | Colorless hygroscopic crystals | Assay | Min 98% |
| Assay (as H3PO4) | Max 1% | Heavy metal (as Pb) | Max 0.002% |
Packaging options
- 500 g (00500)
Details
PHOSPHOROUS ACID CRYSTALS Extra Pure "Store at 15–25°C" Phosphonic acid MSDS DE EN FR KO PT ES TH TR COAs Packings 500 g (00500) Print friendly version Article No. 5256D Grade Extra Pure Purity 98% CAS No. 13598-36-2 Molecular Formula H 3 PO 3 Molecular Weight 82.00 H.S. Code 2811.1990 Shelf Life 60 Months Physical Properties Physical state at 20 °C Solid Colour Colorless crystals Odour Odorless pH value 1 Melting point/ Freezing point [°C] 73°C Boiling point [°C] 200°C Vapour pressure [20°C] Density [g/cm3] 1.651 Solubility in water [% weight] Soluble in water Specifications Appearance Colorless hygroscopic crystals Assay Min 98% Assay (as H3PO4) Max 1% Heavy metal (as Pb) Max 0.002% Safety Information and Hazard Symbols Symbol: GHS05, GHS07 Signal Word: Danger UN No.: 2834 IMCO Class No.: 8 Packing Group: III Hazardous Statement: H302-H314 Precaution Statement: P280-P301+P330+P331-P303+P361+P353-P305 + P351 + P338 Revision Date: 18-Feb-2026 Home Lab Chemicals Acids-Inorganic PHOSPHOROUS ACID CRYSTALS