Tetrasodium pyrophosphate
Products Description of Tetrasodium pyrophosphate CAS#7722-88-5
Sodium pyrophosphate—also called Tetrasodium pyrophosphate or TSPP—is an odorless white powder or granular substance that acts as a buffering agent in laboratories (e.g., for preparing EDTA-sodium pyrophosphate extraction buffers in soil sample microcystin analysis); it also functions as a water softener, thickener, dispersant, wool defatting agent, metal cleaner, and builder in soaps and synthetic detergents, as well as a general sequestering agent and aid in metal electrodeposition, while serving as a tartar control agent in toothpaste and dental floss, a chelating agent in antimicrobial studies, and a food additive in products like chicken nuggets, crab meat, and canned tuna.
Parameters
Melting point | 80 °C |
Boiling point | 93.8 °C |
density | 2.53 g/mL at 25 °C(lit.) |
vapor pressure | 0Pa at 20℃ |
storage temp. | Inert atmosphere,Room Temperature |
solubility | H2O: 0.1 M at 20 °C, clear, colorless |
form | Granular |
color | White |
Specific Gravity | 2.534 |
Odor | Odorless |
PH Range | 10.3 |
Water Solubility | Soluble in water. Insoluble in ethyl alcohol. |
Sensitive | Hygroscopic |
Merck | 14,9240 |
Exposure limits | NIOSH: TWA 5 mg/m3 |
Stability: | Stable. Incompatible with strong oxidizing agents. |
InChIKey | FQENQNTWSFEDLI-UHFFFAOYSA-J |
LogP | -3.42 |
CAS DataBase Reference | 7722-88-5(CAS DataBase Reference) |
EPA Substance Registry System | Tetrasodium pyrophosphate (7722-88-5) |
Safety Information
Hazard Codes | Xi,Xn |
Risk Statements | 36/37/38-41-22 |
Safety Statements | 26-36-39 |
OEB | B |
OEL | TWA: 5 mg/m3 |
WGK Germany | 3 |
RTECS | UX7350000 |
TSCA | Yes |
HS Code | 28353990 |
Hazardous Substances Data | 7722-88-5(Hazardous Substances Data) |
Product Application of Tetrasodium pyrophosphate CAS#7722-88-5
Tetrasodium Pyrophosphate (also called sodium pyrophosphate, tetrasodium diphosphate, or TSPP; chemical formula Na₄P₂O₇) is a mildly alkaline coagulant, emulsifier, and sequestrant with a pH of 10, moderately soluble in water (0.8 g/100 ml at 25°C). It acts as a coagulant in uncooked instant puddings for thickening, reduces meltability and fat separation in cheese, works as a dispersant in malted milk and chocolate drink powders, and prevents crystal formation in tuna—additionally, this non-toxic, biocompatible compound is used as an electroactive medium for exfoliating surface coatings and as a food additive.
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