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Standard GB/T 209-2018 | Quality index | ||
Caustic soda | |||
Item | Flakes 98% | Pears 99% | |
Sodium hydroxide (NaOH),% | 98% Min. | 99% Min. | |
Sodium carbonate (Na2CO3),% | 0.5% Max. | 0.5% Max. | |
Sodium chloride (NaCl),% | 0.05% Max. | 0.05% Max. | |
Ferric oxide (Fe2O3),% | 0.005% Max. | 0.005% Max | |















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