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7758-16-9

Basic Information
CAS No.: 7758-16-9
Name: Disodium pytophosphate
Molecular Structure:
Molecular Structure of 7758-16-9 (Disodium pytophosphate)
Formula: H2Na2O7P2
Molecular Weight: 221.94
Synonyms: Disodium dihydrogen pyrophosphate;Disodiumdiphosphate;Disodium pyrophosphate (Na2H2P2O7);SAPP;SAPP 40;SAPP-RD 1;Sodium hydrogen phosphate (Na2H2P2O7);Sodium acid pyrophosphate(SAPP);Sodium Acid Pyrophosphate (SAPP);Diphosphoricacid, disodium salt (9CI);Pyrophosphoric acid, disodium salt (8CI);Sodiumpyrophosphate (Na2H2P2O7) (6CI);Dihydrogen disodium pyrophosphate;Disodium dihydrogen diphosphate;Disodium dihydrogendiphosphate (Na2H2P2O7);sodium pyrophosphate;
EINECS: 231-835-0
Density: 2.311 g/cm3 (25oC)
Melting Point: 988oC
Solubility: H2 O: 0.1 M at 20 °C, clear, colorless
Appearance: white powder
Hazard Symbols: Xi
Risk Codes: 36
Safety: 24/25
PSA: 149.57000
LogP: 0.06480
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    Disodium Dihydrogen Pyrophosphate(SAPP), Food-grade Molecule formula: Na2H2P2O7 Molecule weight:221.94 Function:Humectants,buffering agent,bulking agent CAS No.,:7758-16-9 1.Description:White powder, soluble in water

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    Product name: Sodium Acid Pyrophosphate CAS No.: 7758-16-9 Molecule Formula:Na2H2P2O7 Molecule Weight:221.94 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard TESTING

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  • Disodium pytophosphate

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    Disodium pytophosphate

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Consensus Reports

Reported in EPA TSCA Inventory.

Specification

The Disodium pyrophosphate, with the CAS registry number 7758-16-9, is also known as Disodium dihydrogenpyrophosphate; Diphosphoric acid disodium salt; Disodium dihydrogen pyrophosphate. It belongs to the product categories of Inorganics.This chemical's molecular formula is Na2H2P2O7 and molecular weight is 221.94.Its EINECS number is 231-835-0. What's more,Its systematic name is Diphosphoric acid, disodium salt.It is white powder.And it is hamfull to the health,so when you use it,avoid contact with skin and eyes. The Disodium pyrophosphate poison by intravenous route. Moderately toxic by ingestion and subcutaneous routes. An irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of POx and Na2O.

Physical properties about Disodium pyrophosphate are:
 (1)ACD/LogP: -3.42; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -7.96; (4)ACD/LogD (pH 7.4): -8.64; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)#H bond acceptors: 7; (8)#H bond donors: 4; (9)#Freely Rotating Bonds: 2;

Uses of Disodium pyrophosphate:
Disodium pyrophosphate is a buffering and chelating agent, with many food and industrial uses.
Food uses: Used in canned seafood to maintain color and reduce purge during retorting. In cured meats, it speeds the conversion of sodium nitrite to NO2- by forming the HONO intermediate, and can improve water holding capacity. It also used to keep the color of the potatoes from darkening.so it is found in frozen hash browns and other potato products.
Industrial uses: In leather treatment, it can be used to remove iron stains on hides during processing.It also can be used with sulfamic acid in some dairy applications for cleaning, especially to remove soapstone. In petroleum production, it can be used as a dispersant in oil well drilling muds.

You can still convert the following datas into molecular structure:
(1)SMILES:[Na+].[Na+].[O-]P(=O)(O)OP([O-])(=O)O;
(2)Std. InChI:InChI=1S/2Na.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,6)/q2*+1;/p-2;
(3)Std. InChIKey:GYQBBRRVRKFJRG-UHFFFAOYSA-L.

The toxicity data of Disodium pyrophosphate as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1gm/kg (1000mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 24, 1957.
mouse LD50 intravenous 59mg/kg (59mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
mouse LD50 oral 2650mg/kg (2650mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
mouse LD50 subcutaneous 480mg/kg (480mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
rabbit LD skin > 300mg/kg (300mg/kg)   Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 47, 1990.

 

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