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 Synonyms: Phosphoric anhydride
Molecular Formula: P2O5
Molecular Weight: 141.94
IMDG classification and number: GB8.1, 81063. Former rail regulation: First-level Inorganic acid corrosive goods, 91034, UN NO.: 1807. IMDG CODE page 8198, type 8.
Uses: It is the material of Phosphorus oxychloride and metaphosphoric acid, acrylate, surfactant, dehydrating agent, desiccant, antistatic agent, refining of medicines and sugar, analytical reagent.
Physical and chemical properties: In normal condition, it is one kind of white crystalline powder, and is easy to deliquescence. Density 0.9g/cm3, Sublimation at 300 ℃. Melting point 580-585℃. Vapor pressure 133.3Pa (384℃) .
Storage and transportation: corrosive goods. Packing method: (Ⅱ) Class. Stored in a cool, dry and ventilated warehouse. Far away from inflammable and alkaline substances. Load & unload gently, avoid breakage. Sealed tightly, avoid rain and moisture.
Shelf period: May to September can be stored for 30 days;October to April can be stored for 60 days; or six months in sealed drum.
Specifications and quality Index:
| Item |
Index |
| Chemically pure |
AR |
Special Grade |
| Assay (P2O5) |
≥99% |
≥99% |
≥99% |
| Active R value |
1.2 |
1.7 |
2 |
| Reducing matter (as P2O5) |
≤0.01 |
≤0.008 |
≤0.005 |
| Clarity test |
Qualified |
Qualified |
Qualified |
| Water Insoluble Matter % |
≤0.02 |
≤0.01 |
≤0.01 |
| Total nitrogen (N) % |
≤0.01 |
≤0.002 |
≤0.001 |
| Heavy Metals (Pb) % |
≤0.01 |
≤0.002 |
≤0.001 |
| Fe % |
≤0.01 |
≤0.002 |
≤0.001 |
| As % |
≤0.01 |
≤0.007 |
≤0.005 |
Packing: 20kg plastic woven bag
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