Ads by Google
1.Property:
Disodium hydrogen phosphate is colorless monoclini crystal or white powder. Relative density 1.52, melting point 34.6°C, refractive rate 1.432 (20°C). Soluble in water, the aqueous solution is alkali, PH value of 1% aqueous solution is 8.8-9.2; insoluble in alcohol. Weathering in the air. Lose all the water of crystallization and turn to sodium pyrophosphate anhydrousif heated to 250°C.
2.Packing photo and instruction:
Disodium hydrogen phosphate (DSP) for industry use should be packed with the two layer lined polyethylene film, the exterior bag is plastic woven bag; net weight 25kg o r 40kg per bag. The interior and exterior bag should be closed sealed. In case of any special requirement, negotiation is required.
3.Specification
Executive standard: HG/T 2965-2009Quality standard:
Item | Index |
sodium hydrogen phosphate (Na2HPO4·12H2O),w/% ≥ | 97.0 |
Sulfate (Calculated by SO4),w/% ≤ | 0.7 |
Chloride (Calculated by Cl),w/% ≤ | 0.05 |
Arsenic (As),w/% ≤ | 0.005 |
Fluoride (Calculated by F),w/% ≤ | 0.05 |
(Fe),w/% ≤ | 0.05 |
Water insoluble matter,w/% ≤ | 0.05 |
pH value (10g/L solution) | 9.0±0.2 |
4.Usage:
Used as fire-proofing agent for fabric, wood and paper, as glaze, welding flux and used in electroplating, etc.
5.Properation:
Prepared by sodium carbonate and phosphoric acid.
6.Remarks:
Weathering in the air, lose water of crystallization and turn to anhydrous substance at 100°C. Decompose to sodium pyrophosphate anhydrous at 250°C.
7.Transportation and storage:
Avoid rain and sunlight during the transporation. Please keep in dry and ventilated place and equipped with under layer to prevent damp
Industrial grade Disodium hydrogen phosphate 97%