Formaldehyde sodium bisulfite addition compound
CAS: 870-72-4
Molecular Formula: HOCH2SO3-Na+
Molecular Weight: 134.09
Product description:Adding distilled water and formaldehyde solution reaction pot, cooling below 15 ℃, the sodium bisulfite mix batch, control the temperature in the 60-65 ℃ for 20 min, with a sodium hydroxide solution control pH9 around. After reaction, and hydrochloric acid to pH around 3. Add active carbon decoloring, filtration, the filtrate after cooling and ethanol precipitation, solid place, the next filter, ethanol washing, drying, the finished product.Protein fragrance fixative, lead - zinc ore floating lotion and color photographs additives (pollution prevention and fade), calico printing industry.
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