Sodium Tripolyphosphate (STPP)

Parameters

Guaranteed

P2 O 5content%

56+/-0.5

Roh 1 minute minimum

81

Maximum

93

Roh 5 minute minimum

84

Maximum

95

Bulk density, g/ml maxium

1.2

Whiteness level % minimum

82

Sodium tripolyphosphate (Na5P3O10) (Expressed as a % of total ) Phasphate content ), minium

92

Phase from 1, % minimum

25

% maximum

Paticle size destribution

55

On 425 micrro (tyler 35 mesh or equvalent) % maximum

5

Thru 150 micrro (tyler 100 mesh or equvalent) % maximum

75

Iron, mg/kg , maximum

300

Ph ( 1.0% in distilled water @ 25C) mi9nimum

9

maximum

10

Whater insoulble % maximum

0.10

Appearancr

White free flowing power, free of foreign materials

free from objectionable odours

Odour