Tetrasodium pyrophosphate CAS#7722-88-5
Versatile functional agent — Acts as a buffer, thickener, dispersant, and water softener in various industrial and laboratory applications.
Effective chelating and sequestering agent — Used in metal cleaning, electrodeposition, and antimicrobial formulations to bind and neutralize metal ions.
Widely used in food industry — Serves as a safe additive for moisture retention and texture improvement in products like chicken nuggets, crab meat, and canned tuna.
Dental care benefits — Functions as a tartar control agent in toothpaste and dental floss, contributing to oral hygiene.
Sodium pyrophosphate, also known as Tetrasodium pyrophosphate or TSPP, is commonly used in laboratories as a buffering agent. It has been shown to be effective in preparing an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis in soil samples. Tetrasodium pyrophosphate is an odorless, white powder or granules. It is used in various applications, including as a water softener, buffering agent, thickening agent, dispersing agent, wool de-fatting agent, metal cleaner, soap and synthetic detergent builder, and general sequestering agent in metal electrodeposition. Additionally, it serves as a tartar control agent in toothpaste and dental floss, and as a chelating agent in antimicrobial studies. It is also used as 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) |
Tetrasodium Pyrophosphate is a mildly alkaline coagulant, emulsifier, and sequestrant with a pH of 10. It is moderately soluble in water, with a solubility of 0.8 g/100 ml at 25°C. In non-cooked instant puddings, it serves as a coagulant to provide thickening. It is used in cheese to reduce meltability and prevent fat separation. As a dispersant, it is employed in malted milk and chocolate drink powders, and it prevents crystal formation in tuna. Also known as sodium pyrophosphate, tetrasodium diphosphate, and TSPP, this compound is non-toxic and biocompatible, making it suitable for use as an electroactive medium for exfoliating surface coatings. Additionally, it is used as an additive in the food industry.
