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Sodium tripolyphosphate

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CAS №	7758-29-4	ГОСТ	GOST 13493-86
Формула	Na5P3O10	Сорт
Синонимы		Фасовка	43,5 kg
Синонимы		Цена

Obtaining

Powdered sodium tripolyphosphate is a product of the thermal processing of phosphoric acid.

Application

Sodium tripolyphosphate is used for the preparation of detergents, water treatment, used to power the boilers in the meat and dairy industry, retail, and for other purposes.

Sodium tripolyphosphate is produced for food processing and industrial use.

Safety requirements

Sodium tripolyphosphate, fire-and explosion-proof, non-toxic.

Packing

Sodium tripolyphosphate is packaged in four-, five-, six-layer sacks, bags of polyethylene or polypropylene, as well as soft special disposable containers.

Guaranteed shelf life

Shelf life is unlimited.

Item	Norm
	Alimentary	Technical
	Alimentary	Premium	First
Appearance	Deteriorating white powder
Mass fraction of total phosphorus pentoxide (P₂O₅), %, not less	57.0	57.0	56.5
Mass fraction of sodium tripolyphosphate (Na₅P₃O₁₀), %, not less	94	94	92
The mass fraction of the first form of sodium tripolyphosphate, %, not more	10	10	10
Fe content, %, not more	0.01	0.01	0.02
Insoluble in water, %, not more	0.10	0.10	0.13
pH of a 1% aqueous solution	9.7±0.3	9.7±0.3	9.7±0.3
Heavy metals precipitated by hydrogen sulfide (Pb), % max	0.002	—	—
Arsenic (As), %, max	0.004	—	—
Particle size: passes through a sieve to GOST 6613–86 with the size of the cell sides in light of 0.25 mm, %, not less	97	97	97
Whiteness, %, not less*	80	80	80
Friability, %, not less*	30	30	30

* Performance of «whiteness» and «free-flowing» is not normalized, the definition required for a set of statistics.