|
Appearance
|
Clear colorless viscous liquid
|
|
Assay (acidimetric)
|
84 - 90%
|
|
Solubility
|
To comply the test
|
|
Relative density
|
about 1.7
|
|
Identification
|
To comply the test
|
|
Appearance of solution
|
To comply the test
|
|
Substance precipitated by NH3
|
To comply the test
|
|
Hypophosphorous acid and phosphorous acid
|
To comply the test
|
|
Alkali phosphate
|
To comply the test
|
|
Aluminium and calcium (Al, Ca)
|
To comply the test
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Arsenic (As)
|
Max 0.0002%
|
|
Iron (Fe)
|
Max 0.005%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|