Sodium phosphate (NaPO3)

101.96

101.94800

233-782-9

532IUT7IRV

DTXSID6040244

2835 39 00

57.2

0.50480

DryPowder

2.5 g/cm³

610 °C

1000g/l

Store at +5°C to +30°C.

Abdominal cavity-mouse LD50: 830 mg/kg

Combustible with H pore-forming agent

Clear, hygroscopic glass. MP: 628 °C. Sol in water, but dissolves slowly. Depolymerizes in aqueous soln to form sodium trimetaphosphate and sodium orthophosphates. /Glassy sodium metaphosphate; Graham's salt/

1

OY3750000

The warehouse is ventilated, low-temperature and dry; store it separately from H pore-forming agent and alkali.

P280, P302+P352, P312, P322, P363, P501

H312

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Sodium metaphosphate is generally recognized as safe when used in accordance with good manufacturing practice.

|Warning|H315 (78.18%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 535 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|Aggregated GHS information provided by 40 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|Not Classified

LD50 Mouse ip 830 mg/kg

... The risk of precipitating calcium phosphate salts in soft tissues throughout the body is of concern. /Oral sodium phosphate/

...LITTLE, IF ANY, CYCLIC METAPHOSPHATE IS ABSORBED THRU INTESTINAL WALL WHEN ADMIN ORALLY. METAPHOSPHATES MUST FIRST BE HYDROLYZED TO TRIPOLYPHOSPHATE & NEXT TO ORTHOPHOSPHATE, WHICH THEN CAN BE ABSORBED.

.../SODIUM/ SALTS, SUCH AS METAPHOSPHATES, ARE TOXIC PROBABLY BECAUSE OF THEIR EXCESS ALKALINITY RATHER THAN FROM SIMPLE SODIUM EXCESS. /SODIUM METAPHOSPHATES/

Supplied in the form of a powder, flakes, and as small, broken, glass-like particles. /glassy sodium metaphosphate; Graham's salt/

Construction|Metaphosphoric acid (HPO3), sodium salt (1:1): ACTIVE|SODIUM METAPHOSPHATE INHIBITED GROWTH OF E COLI.|(NaPO3)n where "n" may be 2 or more. Several different forms are known.|(NaPO3)n. The value of n ranges from 3 to 10 (cyclic molecules) or may be much larger number (polymer). The vitreous sodium phosphates having N2O/P2O5 mole ratios near unity are classified as sodium metaphosphates (Graham's salts). The average number of of phosphorus atoms per molecule in these glasses ranges from 25 to infinity.|The term sodium metaphosphate has also been extended to short-chain vitreous compositions, the molecules of which exhibit the polyphosphate formula Na(n+2)PnO(3n+1) with n as low as 4-5. These materials are more correctly called sodium pyrophosphates.|While sometimes called "sodium hexametaphosphate", it is a mixture of polymeric metaphosphates; not a hexamer. /Glassy sodium metaphosphate; Graham's salt/

Cosmetics -> Buffering; Chelating

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