Sodium Phosphate Dibasic

Sodium Phosphate Dibasic

Synonyms Disodium hydrogen phosphate; Dibasic sodium phosphate; Disodium orthophosphate; Disodium phosphate; DSP; Phosphate of soda; Secondary sodium phosphate; Sodium hydrogenphosphate; sec-Sodium phosphate

CAS Number: 7558-79-4 Molecular Formula: HNa2O4P Molecular Weight: 141.957 g/mol

EC Number: 231-448-7 MDL Number: MFCD00003496

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SKU 02195501-CF
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Description

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

Research Use Only (RUO). Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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.
Density approx 1.7 g/cu cm
EC Number 231-448-7
Format Anhydrous powder
Grade Anhydrous
Heavy Metals ≤0.001%
Insoluble Matter ≤0.005%
Applications Additive||laxative
MDL # MFCD00003496
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)
Physical Appearance White Powder
pKa Eyeshields, Gloves, respirator filter
Potency 8.8-9.4 (25 °C, 50 mg/mL in H2O)(Lit.)
Product Families Description Sodium phosphate dibasic
Product Overview Sodium Phosphate Dibasic
Purity 98.0 - 102.0%
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).
Storage and Handling Room Temperature; desiccate.
Usage Statement Research Use Only (RUO). Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.