D SODIUM PHOSPHATE GERMAN
CAS number: 7558-79-4, 10028-24-7 (dihydrate)
7782-85-6 (heptahydrate) 10039-32-4 (dodecahydrate)
EC number: 231-448-7
RTECS number: WC4500000
Molecular formula: Na2HPO4
Molar mass: 141.96 g / mol (anhydrous) 268.07 g / mol (heptahydrate)
Appearance: White crystal solid
Density: 1.7 g / cm3
Melting point: 250 º C Decay.
Solubility in water: 7.7 g / 100 ml (20 ° C) 11.8 g / 100 mL
(25 ° C, heptahydrate)
Acidity (pKa): 6.83
It is a sodium salt and its hydrated forms, whose chemical formula is designated Na2HPO4. Also known as disodium hydrogen phosphate. Di Sodium Phosphate: It is a material that can be dissolved in water in transparent crystal structure.
Production and Reactions
Synthetically produced from phosphoric acids. Trisodium phosphate salts can be obtained by the reverse reaction.
In the treatment of constipation colonoscopy is used as a saline laxative to cleanse the intestine.
It is used in textile processes and other sectors to keep the ph ratio in the 4-9 range.
Condensation is used as a stabilizer in milk-ready pudding-cream desserts.
In this sector, it is used as a buffer in paint processes and as a stabilizer in textile bleaching process.
In this sector, most of the toothpastes are used as additives in oral hygiene.