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1. boric acid

Boric Acid
Assay H3BO3 99.5% Clarity passes test
Solubility in ethanol passes test
Insoluble matter in water 0.005%
Methanol non-volatiles (as sulfate) 0.05%
Chloride (CI) 0.0005%
Sulfate (SO4) 0.002%
Phosphate (PO4) ...

2. sodium metabisulfite

SMBS Sodium Metabisulfite 98%
Formular: Na2S2O5

CAS No.: 7681-57-4

HS Code: 2832100000

Molecular Weight: 190.12

Content
Food grade Industrial grade
Purity ( As Na2S2O5) 98.0% min 97.0% min
Sulfur Dioxide( SO2) 65.0% ...

3. caustic soda 99%

Caustic soda flakes/pearls/solid/liquid
Caustic soda flake, pearl or solid Crystal, white
Purity 99% 98% 96%
25/1000kg PP/PE bag

Specification:

Item
First Grade
Second Grade

NaOH
99.0%Min
96.0%Min

Na2CO3
0.6%Max
...