Polyphosphoric acid
1, Product Name: Polyphosphoric acid
2, Molecular Formula: H6P4O13
3, Molecular Weight: 337.93
4, IMDG Code: GB8.1 Class 815052. Base iron:
grade-A inorganic acid corrosive goods, 93007.
5, Use: As cyclizing agent and acylating agent for
organic synthesis; as analytical reagent; as substitute of
orthophosphoric acid.
6, Properties: PPA is colorless transparent
ropy liquid; it is deliquescent; non-crystallizable and corrosive;
miscible with water to become orthophosphoric acid, specific
weight: 2.1g/cm3.
7, Risk Characteristics: Non-combustible, but will
cause burning when contacting with gas generation agent-H;
not quite corrosive; will be hydrolyzed into orthophosphoric
acid in water.
8, Emergency Measures & Fire Fighting: Fight fire
with water. First aid: prevent phosphoric acid from contacting
skin and entering eyes. Take the sufferer of the polluted
area, and take off their clothes, wash skin and eyes with
plenty of water, smear the skin with magnesia-glycerine ointment;
if sufferer is burnt, pls. send them to hospital.
9, Storage: Corrosive. Packing: Class (Ⅲ). In
plastic drum or glass bottle (outer packing: wooden crate)
lined with non-combustible materials. Storage: Stored in
dry and cool place. Mixing with alkali, toxic articles and
corrosives are strictly prohibited. Operators should wear
acid-resistant protection articles. Accidental release measures:
In treatment, you must wear gas masks and gloves; spray sodium
carbonate on the polluted grounds and wash with water, and
waste water must be discharged into the wastewater system.
10, Shelf Life: 60 days during May to September; 90
days from October to April.
11, Quality Index:
Item |
Value |
Tech grade |
Food grade |
Assay |
≥115% |
≥116% |
Assay(P2O5)% |
≥84% |
≥84% |
Sulphates |
0.01 |
0.002 |
Viscosity(centipoise) |
35000 |
35000 |
Color |
50 |
20 |
Heavy metal (Pb)% |
≤0.01 |
≤0.003 |
Fe % |
≤0.01 |
≤0.003 |
Arsenic % |
≤0.01 |
≤0.005 |
|
