Tin(II) pyrophosphate

  • Stannous pyrophosphate
  • Diphosphoric acid, tin(2+) salt (1:2)
  • Diphosphoric acid tin(2+) salt (1:2)
Formula
Sn2P2O7
Structure
Description
Odorless, white powder.

Registry Numbers and Inventories.
CAS
15578-26-4
EC (EINECS/ELINCS)
239-635-5
R: 36/37/38
RTECS
JL6737500
Merck
12,8945
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
O7P2Sn2
Formula mass
411.36
Melting point, °C
>800
Density
4.01 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Keep container tightly sealed. Store in cool, dry conditions in well sealed containers.
Protection
Protective work clothing. Chemical protective gloves. Safety glasses or goggles.
Stability
Decomposition will not occur if used and stored according to specifications.
Incompatibilities
Oxidizing agents.
Decomposition
Phosphorous oxides.

Fire.
Fire fighting
Use fire fighting measures that suit the surrounding fire. Wear self-contained respirator. Wear fully protective impervious suit.
Fire potential
Product is not flammable.
Health
1
 
Flammability
0
 
 
Reactivity
1
 

Health.
Exposure limit(s)
NIOSH PEL: 2 mg/m3 (as Sn)
Exposure effects
Inorganic phosphorus compounds may cause irritation and hemorrhages in the stomach as well as liver and kidney damage. Bone structure may be attacked, especially the jaw and teeth. Metallic tin and inorganic tin compounds may cause nausea, vomiting, diarrhea, irritation and pneumoconiosis.

First aid
 
   Ingestion
Seek immediate medical treatment.
   Inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
   Skin
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
   Eyes
Rinse opened eye for several minutes under running water. Then consult a doctor.

Transport.