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EC / List no.: 616-512-8
CAS no.: 7782-85-6
Mol. formula: H15Na2O11P
DiSodium hydrogen phosphate heptahydrate is widely used in detergents and cleaning agents.
Combined with trisodium phosphate, it is employed in the food industry to adjust the pH and in water treatment to prevent calcium scale formation.
DiSodium hydrogen phosphate heptahydrate is utilized as a saline laxative to clean the bowel before a colonoscopy.
DiSodium hydrogen phosphate heptahydrate prevents the coagulation of condensed milk.
DiSodium hydrogen phosphate heptahydrate is also utilized as anti-caking additive in powdered products.
DiSodium hydrogen phosphate heptahydrate enhances the cook time and used as thickening agent in desserts and puddings.
Application
di-Sodium hydrogen phosphate heptahydrate is typically used as a phosphate buffer system component for biomolecule downstream chromatography steps or final liquid formulation.
Due to its low microbial and endotoxin limits, di-Sodium hydrogen phosphate heptahydrate Expert is especially suitable for high-risk applications.
Drug product, or related to the manufacturing of drugs; modified by veterinary, animal, or pet if indicated by source
Pharmaceutical related
Tampons, sanitary napkins
Chemical Properties
White powder
The USP 32 states that dibasic sodium phosphate is dried or contains, 1, 2, 7, or 12 molecules of water of hydration. Anhydrous dibasic sodium phosphate occurs as a white powder.
The dihydrate occurs as white or almost white, odorless crystals.
The heptahydrate occurs as colorless crystals or as a white granular or caked salt that effloresces in warm, dry air.
The dodecahydrate occurs as strongly efflorescent, colorless or transparent crystals.
Production Methods
Either bone phosphate (bone ash), obtained by heating bones to whiteness, or the mineral phosphorite is used as a source of tribasic calcium phosphate, which is the starting material in the industrial production of dibasic sodium phosphate.
Tribasic calcium phosphate is finely ground and digested with sulfuric acid.
This mixture is then leached with hot water and neutralized with sodium carbonate, and dibasic sodium phosphate is crystallized from the filtrate.
Pharmaceutical Applications
Dibasic sodium phosphate is used in a wide variety of pharmaceutical formulations as a buffering agent and as a sequestering agent. Therapeutically, dibasic sodium phosphate is used as a mild laxative and in the treatment of hypophosphatemia.
Dibasic sodium phosphate is also used in food products; for example as an emulsifier in processed cheese.
storage
The anhydrous form of dibasic sodium phosphate is hygroscopic.
When heated to 40℃, the dodecahydrate fuses; at 100℃ it loses its water of crystallization; and at a dull-red heat (about 240℃) it is converted into the pyrophosphate, Na4P2O7.
Aqueous solutions of dibasic sodium phosphate are stable and may be sterilized by autoclaving.
The bulk material should be stored in an airtight container, in a cool, dry place.
Uses
DiSodium hydrogen phosphate heptahydrate is used in conjunction with trisodium phosphate in foods and water softening treatment.
In foods, it is used to adjust pH. DiSodium hydrogen phosphate heptahydrates presence prevents coagulation in the preparation of condensed milk. Similarly, it is used as an anti-caking additive in powdered products.
DiSodium hydrogen phosphate heptahydrate is used in desserts and puddings, e.g. Cream of Wheat to quicken cook time, and Jell-O Instant Pudding for thickening. In water treatment, it retards calcium scale formation.
DiSodium hydrogen phosphate heptahydrate is also found in some detergents and cleaning agents.
Heating solid disodium phosphate gives the useful compound tetrasodium pyrophosphate:
2 HNa2PO4 → Na4P2O7 + H2O
Monobasic and dibasic sodium phosphate are used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.
DiSodium hydrogen phosphate heptahydrate is a reagent with very high buffering capacity widely used in molecular biology, biochemistry and chromatography.
DiSodium hydrogen phosphate heptahydrate is highly hygroscopic and water soluble.
Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers.
DiSodium hydrogen phosphate heptahydrate is highly hygroscopic and water soluble.
Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers.
DiSodium hydrogen phosphate heptahydrate is use in many applications such as sequestrant, emulsifier and buffer in foods.
As mordant in dyeing for weighting silk, in tanning.
In manufacturing of enamels, ceramics, detergents; as fireproofing agent in soldering and brazing instead of borax; as reagent and buffer in analytical chemistry, cathartic, laxative.
DiSodium hydrogen phosphate heptahydrate is generally immediately available in most volumes.
High purity, submicron and nanopowder forms may be considered.
American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.
Typical and custom packaging is available.
Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Appearance :Crystalline
Physical State :Solid
Solubility :Soluble in water (100 mg/ml).
Storage :Store at room temperature
Melting Point :48° C
Density :1.68 g/cm3 at 25° C (lit.)
DiSodium hydrogen phosphate heptahydrate is generally immediately available in most volumes.
High purity, submicron and nanopowder forms may be considered.
Characteristics:
Colorless translucent crystals or a white grain powder.
Easily lose 5mol in air at room temperature. To lose all crystal water when heated to 100ºC.
Soluble in 3 parts of water, practically insoluble in ethanol.
Its aqueous solution is alkaline, PH 9.5.
The heptahydrate in the air is relatively stable.
The relative density is about 1.5.
Melting Point 34~35ºC.
IUPAC NAMES:
disodium heptahydrate hydrogen phosphate
DISODIUM PHOSPHATE
Disodium phosphate heptahydrate
disodium phosphoric acid heptahydrate
disodium;hydrogen phosphate;heptahydrate
Sodium phosphate, dibasic, heptahydrate
SYNONYMS:
Phosphoricacid,disodiumsalt,heptahydrate
Sodiummonohydrogenphosphateheptahydrate(2:1:1:7)
MONOHYDROGEN SODIUM PHOSPHATE
SEC-SODIUM PHOSPHATE HEPTAHYDRATE
SECONDARY SODIUM PHOSPHATE
SECONDARY SODIUM PHOSPHATE HEPTAHYDRATE
SODIUM MONOHYDROGEN PHOSPHATE HEPTAHYDRATE
SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE
SODIUM PHOSPHATE HEPTAHYDRATE
SODIUM PHOSPHATE HEPTAHYDRATE, DIBASIC
SODIUM PHOSPHATE DIBASIC
SODIUM PHOSPHATE, DIBASIC, 7-HYDRATE
SODIUM PHOSPHATE 7H2O, DIBASIC
SODIUM HYDROGEN PHOSPHATE HEPTAHYDRATE
DIBASIC SODIUM PHOSPHATE HEPTAHYDRATE
DI-SODIUM HYDROGEN PHOSPHATE-7-HYDRATE
DISODIUM HYDROGEN PHOSPHATE HEPTAHYDRATE
DISODIUM HYDROGEN PHOSPHATE
DISODIUM PHOSPHATE
DISODIUM PHOSPHATE HEPTAHYDRATE
DSP
DSP HEPTAHYDRATE
Sodiumphosphate,diabasic,heptahydrate
SODIUM HYDROGENPHOSPHATE HEPTAHYDRATE, R EAGENTPLUS, 99.99+%
DI-SODIUM HYDROGEN PHOSPHATE HEPTAHYDRAT E, ACS
SODIUM PHOSPHATE, DIBASIC HEPTAHYDRATE, 98+%, A.C.S. REAGENT
DI-SODIUM HYDROGEN PHOSPHATE-7-HYDRATE R . G., REAG. ACS
Sodiumhydrogenphosphateheptahydrate,ACS,98.0-102.0%
SODIUM PHOSPHATE DIBASIC 7 H2O
Sodium phosphate, dibasic heptahydrate, for analysis ACS, 98+%
sodium hydrogen phosphate heptahydrate, acs
DIBASICSODIUMPHOSPHATE,HEPTAHYDRATE,CRYSTAL,USP
SODIUMPHOSPHATE,DIBASIC,HEPTAHYDRATE,CRYSTAL,REAGENT,ACS
SODIUMPHOSPHATE,DIBASIC,HEPTAHYDRATE,GRANULAR,REAGENT,ACS
SODIUMPHOSPHATEDIBASIC,HEPTAHYDRATE,GRANULAR,BIOTECHGRADE
SODIUMPHOSPHATEDIBASIC,HEPTAHYDRATE,TECHNICAL
SODIUM PHOSPHATE DIBASIC HEPTAHYDRATE GRANULAR
Sodium Phosphate, dibasic, dried powder
Disodium hydrogen phosphate heptahydrate, Disodium phosphate
Dibasic Sodium Phosphate, Heptahydrate, Crystal
Sodium Phosphate, Dibasic, Heptahydrate, Crystal, Reagent
Sodium Phosphate, Dibasic, Heptahydrate, Granular, Reagent
Sodium phosphate, dibasic heptahydrate, for analysis, 99+%
SODIUM PHOSPHATE, DIBASIC HEPTAHYDRATE, REAGENT (ACS)
SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE, REAGENT (ACS)SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE, REAGENT (ACS)SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE, REAGENT (ACS)SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE, REAGENT (ACS)
Phosphoricacid, disodium salt, heptahydrate(8CI,9CI)
SODIUM PHOSPHATE 2BAS 7HYD XTL
OmniPur Sodium Phosphate, Dibasic, Heptahydrate - CAS 7782-85-6 - Calbiochem
Sodium Phosphate, Tribasic, Dodecahydrate, Crystal, Reagent
Sodium phosphate, dibasic heptahydrate, 99+%, for analysis
Sodium phosphate, dibasic heptahydrate, for analysis
Sodium phosphate, dibasic heptahydrate, for analysis ACS
Sodium phosphate, dibasic heptahydrate,98+%,for analysis ACS
SODIUM PHOSPHATE, DI
SSodiuM phosphate dibasic heptahydrate
SodiuM phosphate, dibasic heptahydrate, for analysis ACS, 98+% 500GR
SodiuM phosphate, dibasic heptahydrate, for analysis, 99+% 500GR
DI-SODIUM HYDROGEN PHOSPH. HEPTAH. P.A.
