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Sodium Phosphate, Dibasic

Sodium Phosphate, Dibasic
Sodium Phosphate, Dibasic structure
CAS No.
7558-79-4
Chemical Name:
Sodium Phosphate, Dibasic
Synonyms
DSP;ADSP;PH=7;DSPD;DSPA;acetest;FEMA 2398;sodaphosphate;femanumber2398.;natriumphosphat
CBNumber:
CB1242667
Molecular Formula:
HNa2O4P
Formula Weight:
141.96
MOL File:
7558-79-4.mol

Sodium Phosphate, Dibasic Properties

Melting point:
243-245 °C
Density 
1.064 g/mL at 20 °C
vapor density 
4.9 (vs air)
FEMA 
2398 | DISODIUM PHOSPHATE
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: 0.5 M at 20 °C, clear, colorless
form 
powder
color 
White
PH
8.9-9.2 (25℃, 50g/L in water)
pka
(1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)
Water Solubility 
>=10 g/100 mL at 20 ºC
Sensitive 
Hygroscopic
λmax
λ: 260 nm Amax: 0.019
λ: 280 nm Amax: 0.016
Merck 
14,8659
Stability:
Stable. Incompatible with strong acids. Hygroscopic.
InChIKey
BNIILDVGGAEEIG-UHFFFAOYSA-L
CAS DataBase Reference
7558-79-4(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
SODIUM PHOSPHATE, DIBASIC
FDA UNII
22ADO53M6F
EPA Substance Registry System
Disodium phosphate (7558-79-4)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-24/25
RIDADR  UN 3077 9 / PGIII
WGK Germany  3
RTECS  WC4500000
3
TSCA  Yes
HS Code  28352200
Toxicity LD50 orally in Rabbit: > 2000 mg/kg

Sodium Phosphate, Dibasic price More Price(138)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W239901 Sodium phosphate dibasic FG 7558-79-4 1 SAMPLE $50 2021-12-16 Buy
Sigma-Aldrich 1.06585 Disodium hydrogen phosphate anhydrousEMPROVE?ESSENTIALPhEur,BP,USP,JPE,E339 7558-79-4 1 kg $66.4 2021-12-16 Buy
Sigma-Aldrich 1.06586 Disodium hydrogen phosphate anhydrousforanalysisEMSURE?ACS,Reag.PhEur 7558-79-4 500 g $78.72 2021-12-16 Buy
Sigma-Aldrich SX0723 Sodium phosphate dibasic anhydrous,HPLC,MeetsACSSpecifications 7558-79-4 500 g $75.2 2021-12-16 Buy
Sigma-Aldrich 1.06586 Disodium hydrogen phosphate anhydrousforanalysisEMSURE?ACS,Reag.PhEur 7558-79-4 1 kg $134.12 2021-12-16 Buy

Sodium Phosphate, Dibasic Chemical Properties,Uses,Production

Description

Sodium phosphate dibasic is highly hygroscopic and water soluble. Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers. It is commonly used in biological assay buffers. Sodium is required for nerve and muscle functioning. Sodium Phosphate Dibasic can be used as a dietary supplement and as a nutrient. Sodium hydrogen phosphate is used in food and water treatment in conjunction with trisodium phosphate.In foods, it is used to adjust pH. In water treatment, It retards calcium scale formation. It is also found in some detergents and cleaning agents. This product is known to be Used in many applications including the purification of antibodies. It is used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.

Chemical Properties

The anhydrous compound is white crystalline powder; hygroscopic; density 1.70 g/cm3; converts to sodium pyrophosphate at 240°C; soluble in water; 874 SODIUM PHOSPHATE, DIBASIC insoluble in alcohol. The dihydrate is a crystalline powder or granular solid; density 2.066 g/cm3 at 15°C; loses water of crystallization at 92.5°C. The heptahydrate is a powdered or granular crystalline solid; density 1.679 g/cm3; loses five molecules of water at 48°C. The dodecahydrate is made up of translucent crystals or granules; density 1.524 g/cm3; readily loses five water molecules on exposure to air at ambient temperature; melts at 35°C when the salt contains all water of crystallization; loses all water at 100°C. All the hydrates are soluble in water and insoluble in alcohol.

Chemical Properties

Sodium hydrogen phosphate,NaH2P04·H20, is hygroscopic, transparent, water-soluble crystals. Used as a purgative, reagent,and buffer.

Chemical Properties

Disodium phosphate is anhydrous or contains two molecules of water of hydration

Physical properties

The anhydrous compound is white crystalline powder; hygroscopic; density 1.70 g/cm3; converts to sodium pyrophosphate at 240°C; soluble in water;insoluble in alcohol.
The dihydrate is a crystalline powder or granular solid; density 2.066 g/cm3 at 15°C; loses water of crystallization at 92.5°C.
The heptahydrate is a powdered or granular crystalline solid; density 1.679 g/cm3; loses five molecules of water at 48°C.
The dodecahydrate is made up of translucent crystals or granules; density 1.524 g/cm3; readily loses five water molecules on exposure to air at ambient temperature; melts at 35°C when the salt contains all water of crystallization; loses all water at 100°C.
All the hydrates are soluble in water and insoluble in alcohol.

Occurrence

Disodium phosphate is anhydrous or contains two molecules of water of hydration

Uses

Sodium Phosphate, Dibasic is used as a laboratory reagent and a buffer in chemical analysis. Other uses are in manufacturing ceramics, detergents, and enamels; as a mordant in dyeing; for fireproofing paper and wood; for weighting and printing silk; in the treatment of boiler water; as a sequestrant in food; as a dietary supplement; in soldering enamels; and in fertilizers. It is used therapeutically as a cathartic.

Uses

It is used in pH buffer solutions.

Uses

Sodium Phosphate Dibasic is used as an in conjunction with trisodium phosphate in foods and water treatment. In foods, it is used to adjust pH. In water treatment, It retards calcium scale formation. It is also found in some detergents and cleaning agents. Sodium Phosphate Dibasic is used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.

Preparation

Dibasic sodium phosphate is prepared by treating phosphoric acid with a slight excess of sodium carbonate. The solution is boiled to expel carbon dioxide. Upon cooling dodecahydrate crystallizes out. Heating dodecahydrate at 100°C forms the anhydrous salt.
H3PO4 + Na2CO3 → Na2HPO4 + CO2 + H2O
Dibasic sodium phosphate also is prepared by reacting dibasic calcium phosphate with sodium carbonate. The product calcium carbonate precipitates leaving dibasic sodium salt in the solution. The solution on cooling yields crystals of hydrated product.
CaHPO4 + Na2CO3 → CaCO3 + Na2HPO4

Biochem/physiol Actions

Sodium phosphate dibasic is an important component of running buffer of denaturing gel electrophoresis. It induces glomerular calcification as well as other nephrotic syndrome in Sprague-Dawley rats.

Safety Profile

Poison by intravenous route. Moderately toxic by intraperitoneal, subcutaneous, and intramuscular routes. Mildly toxic by ingestion. A skin and eye irritant. When heated to decomposition it emits toxic fumes of POx and Na2O. See also PHOSPHATES.

Purification Methods

Crystallise the salt twice from warm water, by cooling. Dry in air, then in an oven overnight at 130o. It should be dried before use as it is slightly hygroscopic. It forms di-, hepta-and deca-hydrates.

Sodium Phosphate, Dibasic Preparation Products And Raw materials

Raw materials

Preparation Products


Sodium Phosphate, Dibasic Suppliers

Global( 427)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-18652417778 +86-18805133257
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Henan DaKen Chemical CO.,LTD.
+86-371-66670886
info@dakenchem.com China 15427 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com China 22607 55
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008615858145714
+86-571-56059825 fandachem@gmail.com CHINA 9128 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
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career henan chemical co
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+8619933070948
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86-18871470254
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Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5942 58

View Lastest Price from Sodium Phosphate, Dibasic manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2022-01-06 Disodium hydrogenorthophosphate
7558-79-4
US $200.00 / KG 10g 99% 500kg/month HEBEI YINGONG NEW MATERIAL TECHNOLOGY CO.,LTD
2021-12-01 Disodium Phosphate Dodecahydrate
7558-79-4
US $10.00 / Kg/Drum 1KG 98% 10 ton Hebei Crovell Biotech Co Ltd
2021-11-02 Disodium Phosphate
7558-79-4
US $0.00 / Kg/Bag 25Kg/Bag 99.0% 200 tons Jiangsu Kolod Food Ingredients Co.,Ltd.

Sodium Phosphate, Dibasic Spectrum


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