Potassium dihydrogen phosphate | Yunnan Titan New Materials Technology Co.,Ltd

Mô tả

Colorless crystals or white granular powder. Stable in the air, lost 400 ℃water into sodium metaphosphate. About 4.5 parts water soluble, and insoluble in ethanol. pH4.4 ~ 4.7. The relative density of 2.34. Melting point252.6 ℃.

Keywords: Phosphate

ỨNG DỤNG

Preparation buffer. Determination of arsenic, antimony, phosphorus, aluminum, and iron. Preparation of phosphorus standard solution. The preparation of the medium. Determination of inorganic phosphorus, serum alkaline phosphatase activity. This product should be kept under seal

Phiếu kiểm nghiệm

Quality standards GB 1274-93 GB 6353-86

0.025m mixed phosphate solution pH（S）_Ⅱ（25℃）：pH（S）_Ⅱ＝pH（S）_Ⅰ±0.005

Item	Analytical grade	Chemically pure	Capacity operating reference
Content	≥99.5%	≥99.0%	Not less than 99.5%
pH (50g/ L solution, 25 ° C)	4.2～4.5	4.2～4.5	/
Aqueous reaction	/	/	Qualified
Max impurities,%:
Clarity Test	Qualified	Qualified	Qualified
Water insoluble matter	≤0.002	≤0.005	≤0.002
Loss on drying	≤0.2	≤0.3	≤0.2
Chloride (Cl)	≤0.001	≤0.005	≤0.001
Sulfate (SO4)	≤0.003	≤0.005	≤0.002
Nitrate (NO3)	/	/	≤0.002
Sodium (Na)	≤0.02	≤0.05	≤0.02
Iron (Fe)	≤0.001	≤0.005	≤0.001
Heavy metals (as Pb)	≤0.001	≤0.005	≤0.001
Arsenic (As)	≤0.0005	≤0.002	≤0.0005
Total nitrogen amount (N)	≤0.001	≤0.002	/
Ammonium salts (NH4)	/	/	≤0.001
Ammonia precipitate	/	/	≤0.005