USD $100.00-150.00 / Kilogram
1.specification
guaranteed technical specifications:
no. |
specifications |
industrial grade |
food grade |
1 |
appearance |
white powder |
white powder |
2 |
assay(as na2h2p2o7)% ≥ |
95.0 |
95.5 |
3 |
p2o5% |
63.0-64.0 |
63.0-64.0 |
4 |
ph value |
3.5-4.5 |
3.5-4.5 |
5 |
water insoluble % ≤ |
1.0 |
1.0 |
6 |
fluoride (as f) % ≤ |
—— |
0.005 |
7 |
heavy metals (as pb) % ≤ |
—— |
0.0015 |
8 |
arsenic (as)% ≤ |
—— |
0.0003 |
2.properties:
white powder or granular;relative density 1.86g/cm3;soluble in water and insoluble in ethanol; if its aqueous solution is heated together with diluted inorganic acid, it will be hydrolyzed into phosphoric acid; it is hydroscopic, and when absorbing humidity it will become into a product with hexa-hydrates; if it is heated at a temperature above 220°c, it will be decomposed into sodium meta phosphate.
3.uses:
as a leavening agent it is applied to roast foodstuffs to control the fermentation speed; when applied to instant noodles, it can shorten water resetting time and avoid stickiness and mushiness of the noodles; when applied to crackers or cakes, it may shorten fermentation time, lower the breakage, make the porous space in good order and therefore lengthen the shelf life.