 |
STP 113–38–2.58–94
Empirical formula AI(NH4)(SO4
)2 12H2O
Technical
requirements
|
Index
title
|
Standard
|
|
Mass proportion of ammonia alum,
AI(NH4)(SO4 )2 .12H2O, %, no less
than
|
97,3
|
|
Mass proportion of substances insoluble in water acidified with sulphuric acid, %, no more than
|
3*10-3
|
|
Mass proportion of calcium (Ca), %, no more than
|
3*10-4
|
|
Mass proportion of magnesium (Mg), %, no more than
|
2*10-5
|
|
Mass
proportion of titanium (Ti), %, no more
than
|
4*10-4
|
|
Mass
proportion of chrome (Cr), %, no more
than
|
4*10-4
|
|
Mass
proportion of potassium (K), %, no more than
|
5*10-3
|
|
Mass
proportion of ferrum (Fe), %, no more than
|
2*10-4
|
|
Mass
proportion of sodium (Na), %, no more than
|
5*10-4
|
|
Mass
proportion of silicon (Si), %, no more than
|
1*10-4
|
|
Desiccation
losses, %, no more than
|
3
|
Packing – polyethylene inlay
bags, inserted into plywood or
fiber wound drum, or in
polyethylene barrels, or in polyethylene
boxes, or in paper bags.
Net weight: no more than 50 kg when packing in drums or barrels, when packing
in boxes - net weight is no more than 13 kg, when packing in bags – net weight is no more
than 30 kg.
Warranty period of storage– 12 months after production.
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