Sodium phosphate, dibasic, anhydrous, 98.0 - 102.0%

Product Description

Sodium Phosphate Dibasic

Application Notes

Disodium phosphate is used in conjunction with trisodium phosphate in many steam-boiler applications. It supplies the inventory of free phosphates to retard calcium scale formation. Used as a sequestrant, emulsifier and buffer in foods, as mordant in dyeing, for weighting silk, in tanning, in manufacture of enamels, ceramics, detergents, as a fireproofing agent, in soldering and brazing instead of borax, as reagent and buffer in analytical chemistry, as a cathartic, and as a laxative.

Usage Statement

Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.

Key Applications

Additive | laxative

Specifications

SKU	02195501-CF
Alternate Names	Disodium hydrogen phosphate; Dibasic sodium phosphate; Disodium orthophosphate; Disodium phosphate; DSP; Phosphate of soda; Secondary sodium phosphate; Sodium hydrogenphosphate; sec-Sodium phosphate
Application Notes	Disodium phosphate is used in conjunction with trisodium phosphate in many steam-boiler applications. It supplies the inventory of free phosphates to retard calcium scale formation. Used as a sequestrant, emulsifier and buffer in foods, as mordant in dyeing, for weighting silk, in tanning, in manufacture of enamels, ceramics, detergents, as a fireproofing agent, in soldering and brazing instead of borax, as reagent and buffer in analytical chemistry, as a cathartic, and as a laxative.
Base Catalog Number	195501
CAS #	7558-79-4
Density	approx 1.7 g/cu cm
EC Number	231-448-7
Format	Anhydrous powder
Grade	Anhydrous
Insoluble Matter	≤0.005%
Molecular Formula	HNa2O4P
Molecular Weight	141.957 g/mol
Optical Rotation	≤0.005%Iron
Particle Size	≤0.002%
pH	Between 8,4 and 9,6 (1 % solution)
pKa	Eyeshields, Gloves, respirator filter
Potency	8.8-9.4 (25 °C, 50 mg/mL in H2O)(Lit.)
Purity	98%
RTECS Number	WC4500000
Solubility	Freely soluble in <a class="pubchem-internal-link CID-962" href="https://pubchem.ncbi.nlm.nih.gov/compound/water">water</a>. Insoluble in <a class="pubchem-internal-link CID-702" href="https://pubchem.ncbi.nlm.nih.gov/compound/ethanol">ethanol</a>
Specific Activity	Soluble in water, but more soluble in hot water; insoluble in alcohol, ethanol. pH of a 1% aqueous solution 9.1 (anhydrous) and 9.5 (heptahydrate).
Usage Statement	Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.