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Phosphorus pentoxide
Polyphosphoric acid
Phosphorus pentoxide(200kg metal pail)

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% =99.5% =99.5%
Active R value 1.2 1.7 2.0
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 =0.0025

Packing: 20kg plastic woven bag

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