Tetrasodium pyrophosphate
Synonyms & Trade Names
Pyrophosphate, Sodium pyrophosphate, Tetrasodium diphosphate, Tetrasodium pyrophosphate (anhydrous), TSPPPhysical Description
Odorless, white powder or granules. [Note: The decahydrate (Na4P2O7 10H2O) is in the form of colorless, transparent crystals.]Molecular Weight
265.9Boiling Point
DecomposesMelting Point
1810°FSolubility
(77°F): 7%Vapor Pressure
0 mmHg (approx)Ionization Potential
NASpecific Gravity
2.45Flash Point
NAUpper Exposive Limit
NALower Explosive Limit
NA
Noncombustible Solid
Incompatibilities & Reactivities
Strong acidsExposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, skin, nose, throat; dermatitisTarget Organs
Eyes, skin, respiratory systemPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash (solution)
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Water wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division