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Sodium pyrophosphate

Product Name
Sodium pyrophosphate
CAS No.
7758-16-9
Chemical Name
Sodium pyrophosphate
Synonyms
SODIUM ACID PYROPHOSPHATE;SODIUM PYROPHOSPHATE;SAPP;DISODIUM PYROPHOSPHATE;DSPP;SAPP 28;SAPP 40;TwosodiuM pyrophosphatetwo hydrogen;Na4P2O7.nH20;disodiumdiphosphate
CBNumber
CB7665738
Molecular Formula
H5NaO7P2
Formula Weight
201.97
MOL File
7758-16-9.mol
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Sodium pyrophosphate Property

Melting point:
decomposes 220℃ [MER06]
Density 
(hexahydrate) 1.86
vapor pressure 
0Pa at 20℃
storage temp. 
-70°C
solubility 
H2O: 0.1 M at 20 °C, clear, colorless
form 
white powder
color 
White to Off-White
PH
3.5-4.5 (20℃, 0.1M in H2O, freshly prepared)
Water Solubility 
Fully miscible in water. Insoluble in alcohol and ammonia.
λmax
λ: 260 nm Amax: 0.11
λ: 280 nm Amax: 0.09
Merck 
13,8643
Stability:
Stable.
InChI
InChI=1S/Na.H4O7P2.H/c;1-8(2,3)7-9(4,5)6;/h;(H2,1,2,3)(H2,4,5,6);
InChIKey
IQTFITJCETVNCI-UHFFFAOYSA-N
SMILES
O(P(O)(O)=O)P(O)(O)=O.[NaH]
LogP
-3.420 (est)
CAS DataBase Reference
7758-16-9(CAS DataBase Reference)
EPA Substance Registry System
Disodium diphosphate (7758-16-9)
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Safety

Hazard Codes 
Xi
Risk Statements 
36
Safety Statements 
24/25-26
WGK Germany 
2
RTECS 
UX6475000
TSCA 
Yes
Hazardous Substances Data
7758-16-9(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H319Causes serious eye irritation

Precautionary statements

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
SAB1304988
Product name
ANTI-DSPP (N-TERM) antibody produced in rabbit
Purity
IgG fraction of antiserum, buffered aqueous solution
Packaging
400μl
Price
$481
Updated
2024/03/01
Sigma-Aldrich
Product number
71501
Product name
Sodium pyrophosphate dibasic
Purity
BioUltra, ≥99.0% (T)
Packaging
100g
Price
$78.9
Updated
2024/03/01
Sigma-Aldrich
Product number
71501
Product name
Sodium pyrophosphate dibasic
Purity
BioUltra, ≥99.0% (T)
Packaging
1kg
Price
$358.4
Updated
2024/03/01
Alfa Aesar
Product number
J62052
Product name
Sodium pyrophosphate
Purity
200mM buffer soln.
Packaging
100ml
Price
$50.4
Updated
2023/06/20
Alfa Aesar
Product number
J62052
Product name
Sodium pyrophosphate
Purity
200mM buffer soln.
Packaging
250ml
Price
$83.9
Updated
2023/06/20
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Sodium pyrophosphate Chemical Properties,Usage,Production

Chemical Properties

Disodium dihydrogendiphosphate [7758-16-9], disodium diphosphate, acidic sodium pyrophosphate, Na2H2P2O7, Mr 221.97, d 2.31. Its solubility in water is 13g Na2H2P2O7/100g H2O at 20 °C, and 20g at 80°C. The pH of a 1% aqueous solution is 4.1. The usual commercial product is the anhydrous, nonhygroscopic salt in powder form. The hexahydrate, Na2H2P2O7.6H2O, d 1.85, crystallizes from aqueous solution below 27 °C. Above this temperature, it is converted to the anhydrous form. Disodium diphosphate is used as a (tropically stable) acid carrier in baking powder, for improvement of flow properties in flour, for pH regulation, and in dental care products for prevention of tartar formation.

Uses

Sodium Pyrophosphate is a leavening agent, preservative, sequestrant, and buffer which is mildly acidic with a ph of 4.1. It is moderately soluble in water, with a solubility of 15 g in 100 ml at 25°c. It is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process. It is used in baking powder as a leavening agent. It is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium. It is used to sequester metals in processed potatoes. It is also termed sapp, sodium acid pyrophosphate, acid sodium pyrophosphate, disodium diphosphate, and disodium dihydrogen pyrophosphate.

Uses

Sodium Pyrophosphate Dibasic is anhydrous form, pyrophosphate salt used in buffers.

Preparation

Disodium dihydrogendiphosphate is produced from sodium dihydrogenmonophosphate by heating at 200-250℃:
Na2CO3+2H3PO4→2NaH2PO4+H2O+CO2↑
2NaH2PO4→Na2H2P2O7+H2O

General Description

The APP (amyloid precursor protein) gene is mapped to human chromosome 21q21.3. It encodes a integral membrane protein. APPα is a soluble protein generated by sequential cleavage with α and γ secretase.

Flammability and Explosibility

Non flammable

Biochem/physiol Actions

Amyloid precursor protein α is an α-secretase-cleaved soluble protein that has been shown to have neuroprotective properties. It is derived from amyloid precursor protein. The protein consists of 612 amino acids. Several G protein-coupled receptors are known to activate α-secretase-dependent processing of APP. It has neuroprotective, neurogenic and neurotrophic functions. Amyloid precursor protein a also stimulates gene expression and protein expression.

Safety Profile

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.

Sodium pyrophosphate Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from Sodium pyrophosphate manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Sodium pyrophosphate 7758-16-9
Price
US $50.00-30.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/Month
Release date
2024-04-28
Ouhuang Engineering Materials (Hubei) Co., Ltd
Product
Disodium pytophosphate 7758-16-9
Price
US $10.00/kg
Min. Order
1kg
Purity
99.7%
Supply Ability
200000kg
Release date
2024-04-26
Shaanxi Dideu Medichem Co. Ltd
Product
Disodium pytophosphate USP/EP/BP 7758-16-9
Price
US $1.10/g
Min. Order
1g
Purity
99.0% min
Supply Ability
100 tons min
Release date
2021-05-27

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