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Description
Molecular Formula: NaH2PO4·2H2O
Molecular Weight: 156.01
Technical Standard:Index |
HG/T2767-1996 |
GB/T1267-1999 |
China |
GB1908-80 |
FCC1981 | |||||
TECH |
A.C.S |
1900 | 2000 | |||||||
Grand | HIGH CLASS | FIRST | PASS | AR | CP |
MEDICAL |
FOOD |
|||
Assay≥ | 98.5 | 98 | 97 | 99 | 98 | 98 | 98 | 98 | 98 | 98-103 |
Insoluble matter%≤ | 0.10 | 0.15 | 0.20 | 0.01 | 0.02 | 0.25 | 0.05 | 0.2 | ||
F %≤ | 0.005 | 0.005 | 0.005 | |||||||
Al(以Al计) %≤ | 0.01 | |||||||||
Cl(Cl) %≤ | 0.2 | 0.4 | 0.005 | 0.01 | 0.01 | 0.01 | 0.014 | 0.014 | ||
SO4(so4) %≤ | 0.3 | 0.5 | 0.005 | 0.01 | 0.05 | 0.05 | 0.25 | |||
NO3(No3) %≤ | 0.001 | 0.002 | ||||||||
K %≤ | 0.002 | 0.1 | ||||||||
Ca %≤ | 0.01 | 0.01 | ||||||||
Fe(Fe) %≤ | 0.05 | 0.10 | 0.001 | 0.005 | ||||||
NH4 %≤ | 0.002 | |||||||||
Heavy metal(as Pb) %≤ | 0.05 | 0.01 | 0.005 | 0.001 | 0.001 | 0.02 | 0.002 | 10mg/kg | ||
PH | 4.2-4.6 | 4.2-4.6 | 4.1-4.5 | 4.2-4.6 | 4.2-4.6 | |||||
Alkalinity | 18.8-20 | 18.8-21 | 18.8-21 | |||||||
As(as As) %≤ | 0.005 | 0.0002 | 0.0005 | 0.0005 | 0.0005 | 0.005 | 0.0005 | 3mg/kg | ||
Loss on drying%≤ | 10-15 | 20-25 | ||||||||
Al(Al) | 0.01 |
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Sodium dihydrogen phosphate
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