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Tetrasodium pyrophosphate, also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is a colorless transparent crystalline chemical compound with the formula Na4P2O7. It is a salt composed of pyrophosphate and sodium ions. Toxicity is approximately twice that of table salt when ingested orally.[3] There is also a hydrated form, Na4P2O7 · 10(H2O).[4] Use[edit] Tetrasodium pyrophosphate
Tetrasodium pyrophosphate
is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. Common foods containing tetrasodium pyrophosphate include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, and soy-based meat alternatives and cat foods and cat treats where it is used as a palatability enhancer. In toothpaste and dental floss, tetrasodium pyrophosphate acts as a tartar control agent, serving to remove calcium and magnesium from saliva and thus preventing them from being deposited on teeth. Tetrasodium pyrophosphate
Tetrasodium pyrophosphate
is used in commercial dental rinses before brushing to aid in plaque reduction. Tetrasodium pyrophosphate
Tetrasodium pyrophosphate
is sometimes used in household detergents to prevent similar deposition on clothing, but due to its phosphate content it causes eutrophication of water, promoting algae growth. Production[edit] Tetrasodium pyrophosphate
Tetrasodium pyrophosphate
is produced by the reaction of furnace-grade phosphoric acid with sodium carbonate to form disodium phosphate, which is then heated to 450 °C to form tetrasodium pyrophosphate. Alternatively, it can be created by the molecular dehydration of dibasic sodium phosphate at 500 °C (932 °F). References[edit]

^ CDC - NIOSH Pocket Guide to Chemical Hazards ^ a b c d "NIOSH Pocket Guide to Chemical Hazards #0606". National Institute for Occupational Safety and Health (NIOSH).  ^ Handbook of food toxicology, S. S. Deshpande, page 260 ^ D.L. Perry S.L. Phillips (1995) Handbook of inorganic compounds CRC Press ISBN 0-8493-8671-3

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Sodium
Sodium
compounds

NaAlO2 NaBH4 NaBH3(CN) NaBO2 NaBiO3 NaBr NaBrO NaBrO3 NaCH3COO NaC6H5CO2 NaC6H4(OH)CO2 NaCN NaCl NaClO NaClO2 NaClO3 NaClO4 NaF Na2FeO4 NaH NaHCO3 NaH2PO4 NaHSO3 NaHSO4 NaI NaIO3 NaIO4 Na5IO6 NaMnO4 NaN3 NaNH2 NaNO2 NaNO3 NaOCN NaO2 NaO3 NaOH NaPO2H2 NaReO4 NaSCN NaSH NaTcO4 NaVO3 Na2CO3 Na2C2O4 Na2CrO4 Na2Cr2O7 Na2GeO3 Na2MnO4 Na3MnO4 Na2MoO4 Na2MoS4 Na2N2O2 Na2O Na2O2 Na2O(UO3)2 Na2PO3F Na2S Na2SO3 Na2SO4 Na2S2O3 Na2S2O4 Na2S2O5 Na2S2O6 Na2S2O7 Na2S2O8 Na2S4O6 Na2Se Na2SeO3 Na2SeO4 Na2SiO3 Na2Si2O5 Na4SiO4 Na2Te Na2TeO3 Na2TeO4 Na2Po Na2Ti3O7 Na2U2O7 NaWO4 Na2Zn(OH)4 Na3N Na3P Na3PO4 Na3VO4 Na4Fe(CN)6 Na4P3O7 Na5P3O10

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