Phosphorous Pentoxide(P2O5)
Classification of hazardous materials: GB8.1-81063. IMDG CODE p8198,8
Use: in synthesis
of phosphorus oxychloride, metaphosphoric acid;
in manufacture of acrylate, surface active agent;
in refining of drugs and sugar; as dehydrating
agent, desiccant, antistatic agent; analytical
reagent.
CAS NO.:1314-56-3
UN NO.:1807
HS Code:28091000
Molecular formula:P2O5
Molecular weight:141.94
Electronic structural formula: ![]()
Use: in synthesis of phosphorus oxychloride, metaphosphoric acid; in manufacture of acrylate, surface active agent; in refining of drugs and sugar; as dehydrating agent, desiccant, antistatic agent; analytical reagent.
Properties: White crystals, very deliquescent, density 0.9g/cm3,mp. 580-585C, sublimation temperature 300C, vapor pressure 133.3Pa (384C). May transform to amorphous from under elevated temperature and pressure. Readily absorbs moisture from. Exothermic hydrolysis by water to yield phosphoric acid.
Hazards Identification: Non-flammable. Reacts vigorously with water and water-containing substances like wood or cotton, liberates much heat and may even cause fire. Corrosive to metal. Very irritating. May cause severe burn to eye, skin, mucosa and respiratory tract even at as low as 1mg/cm3.
Fire fighting measures: Wear full protective gear. Do NOT use water directly on fire. Use dry chemical, carbon dioxide, or alcohol-resistant foam.
First aid measures:
Inhalation: Remove from exposure to fresh air immediately. Get medical aid.
Eye: Flush eyes with plenty of water for at least 15 minutes. Ger medical aid.
Skin: Flush skin with plenty of water. Get medical aid.
Labeling: Corrosive
Storage & Handling: Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water, metals, alkali and flammable substances Handle with care. Keep containers tightly closed. Avoid moisture.
Accidental Release Measures: Wear full protective gear. Neutralize the spills with a mixed solution of sodium bicarbonate and calcium hydroxide.
• Specifications & Technical Data:
Item |
Index |
||
Chemical
pure |
Analytic
pure |
food
grade |
|
Assay |
>99% |
>99.5% |
>99.5% |
Live R Value |
>2 |
>3 |
>3.5 |
Reduced (P2O3) |
<0.01 |
<0.008 |
<0.005 |
Learity test |
Qualified |
Qualified |
Qualified |
Water insoluble matter |
<0.01 |
<0.005 |
<0.005 |
Total N |
<0.01 |
<0.002 |
<0.001 |
Heavy metals with (the Pb allounts) |
<0.01 |
<0.002 |
<0.001 |
Fe |
<0.01 |
<0.002 |
<0.001 |
As |
<0.01 |
<0.002 |
<0.001 |
• Specifications for Delivery
![]() |
![]() |
Bottle(500g 1kg) |
Paper drum(25kg 50kg) |
![]() |
![]() |
Woven bag(30kg 25kg 20kg 15kg 10kg 5kg) |
Iron drum(150kg 200kg) |
It can also be packed according to client's requirements. P2O5 can only be loaded with blade and avoid moisture in delivery in Europe. It can be kept for 12 months in sealed drum.
Polyphosphoric Acid
Classification of hazardous
materials: GB8.1-81505
CAS NO.:8017-16-1
UN NO.:3264
HS Code:28092090
Molecular formula:H6P4O13
Molecular weight:337.93
Electronic structural formula: 
Use: as cyclizing agent and acylating agent in organic synthesis; analytical reagent.
Properties: Clear colorless viscous liquid, deliquescent, soluble in water with hydrolysis to phosphoric acid.
Hazards Identification: Generally non-flammable, but may reacts vigorously with H foaming agent and cause fire. Low corrosive.
Fire fighting measures: Wear acid proof protective gear. Extinguish fire with water.
First aid measures:
Eye: Flush eyes with plenty of water. Get medical aid.
Skin: Flush skin with plenty of water. Get medical aid.
Ingestion: Give water. Get medical aid.
Packaging: Plastic barrel or glass bottle.
Label: Corrosive
Storage & Handling: Store in a cool, dry, well-ventilated area away from incompatible substances, Keep away from alkali, toxic or corrosive substances, Handle with care, Wear acid proof protective geat.
Accidental Release Measures: Wear full protective gear. Neutralize the spills with sodium carbonate solution.
• Quantity index sign:
Item |
Index |
|
Food grade |
Industrial grade |
|
Assay |
>116% |
>114.5% |
Assay (P2O5)% |
>84% |
>83% |
Chloride |
<0.001 |
<0.001 |
Sulfate radical |
0.002 |
0.01 |
Glue degree |
35000 |
35000 |
Colour degree |
20 |
50 |
Heavy metals with (the Pb allounts) |
<0.001 |
<0.01 |
Fe |
<0.001 |
<0.01 |
As |
<0.001 |
<0.01 |
• Specifications for Delivery
![]() |
|
Bottle (2kg 1kg) |
|
|
![]() |
Twenty rise square plastics bucket |
1m3 plastics bucket |
It can also be packed according to client's requirements. P2O5 can only be loaded with blade and avoid moisture in delivery in Europe. It can be kept for 12 months in sealed drum.









