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149-44-0
bosschem
149-44-0
Product name: Sodium hydroxymethanesulphinate
English alias: Rongalite; Sodium formaldehyde sulfoxylate; Formaldehyde sodium bisulfite
CAS: 149-44-0
Molecular formula: CH3NaO3S
Appearance: White crystalline powder
Package: 25kg/drum
Sodium hydroxymethanesulphinate, commonly known as Rongalite, is a versatile reducing agent widely used in textile, paper, polymer, and chemical industries. It is primarily used for vat dyeing, discharge printing, and bleaching of textiles, especially cotton and rayon. It is also used as a polymerization inhibitor, antioxidant, and stabilizer in various industrial formulations.
Due to its strong reducing power, it is an effective agent for reducing metal ions and dyes and can also act as a sulfonating agent in chemical synthesis. The chemical formula of Sodium hydroxymethanesulphinate is CH3NaO3S, and it typically appears as a white crystalline powder that is highly soluble in water but unstable in moist air.
Number | Item | Specification | Result |
1 | Appearance | White crystalline powder | White powder |
2 | Assay (as NaHSO2·CH2O·2H2O) (%) | ≥98.0 | 98.56 |
3 | Free Alkali (NaOH) (%) | ≤0.5 | 0.21 |
4 | Iron (Fe, ppm) | ≤20 | 8 |
5 | pH (10% solution) | 6.0 – 8.0 | 6.7 |
Conclusion | PASS |
1.Sodium hydroxymethanesulphinate used as a reducing agent in vat dyeing and discharge printing in textile industry
2.Sodium hydroxymethanesulphinate applied in paper bleaching and color-stripping processes
3 .Sodium hydroxymethanesulphinate functions as a polymerization inhibitor in synthetic rubber and plastics
4 .Sodium hydroxymethanesulphinate acts as an antioxidant and stabilizer in various industrial formulations
5 .Sodium hydroxymethanesulphinate used in photographic chemicals and water treatment applications
6Sodium hydroxymethanesulphinate employed in the leather and dye industries for color removal and bleaching
Sodium hydroxymethanesulphinate is a strong reducing agent and should be handled with care. It may release sulfur dioxide on contact with acids or under decomposition, which is irritating to eyes and respiratory tract. Avoid inhalation and prolonged skin contact. It should be stored and handled in a dry, well-ventilated area with appropriate personal protective equipment.
Keep the product dry and tightly sealed
Store in a cool, well-ventilated area, away from heat and moisture
Relative humidity should be maintained below 50%
Avoid contact with strong acids and oxidizing agents
Sodium hydroxymethanesulphinate is supplied in moisture-proof packaging to ensure stability. Common packaging options include:
25 kg drums or fiber drums with inner plastic lining
Customized bulk packaging available on request
Product name: Sodium hydroxymethanesulphinate
English alias: Rongalite; Sodium formaldehyde sulfoxylate; Formaldehyde sodium bisulfite
CAS: 149-44-0
Molecular formula: CH3NaO3S
Appearance: White crystalline powder
Package: 25kg/drum
Sodium hydroxymethanesulphinate, commonly known as Rongalite, is a versatile reducing agent widely used in textile, paper, polymer, and chemical industries. It is primarily used for vat dyeing, discharge printing, and bleaching of textiles, especially cotton and rayon. It is also used as a polymerization inhibitor, antioxidant, and stabilizer in various industrial formulations.
Due to its strong reducing power, it is an effective agent for reducing metal ions and dyes and can also act as a sulfonating agent in chemical synthesis. The chemical formula of Sodium hydroxymethanesulphinate is CH3NaO3S, and it typically appears as a white crystalline powder that is highly soluble in water but unstable in moist air.
Number | Item | Specification | Result |
1 | Appearance | White crystalline powder | White powder |
2 | Assay (as NaHSO2·CH2O·2H2O) (%) | ≥98.0 | 98.56 |
3 | Free Alkali (NaOH) (%) | ≤0.5 | 0.21 |
4 | Iron (Fe, ppm) | ≤20 | 8 |
5 | pH (10% solution) | 6.0 – 8.0 | 6.7 |
Conclusion | PASS |
1.Sodium hydroxymethanesulphinate used as a reducing agent in vat dyeing and discharge printing in textile industry
2.Sodium hydroxymethanesulphinate applied in paper bleaching and color-stripping processes
3 .Sodium hydroxymethanesulphinate functions as a polymerization inhibitor in synthetic rubber and plastics
4 .Sodium hydroxymethanesulphinate acts as an antioxidant and stabilizer in various industrial formulations
5 .Sodium hydroxymethanesulphinate used in photographic chemicals and water treatment applications
6Sodium hydroxymethanesulphinate employed in the leather and dye industries for color removal and bleaching
Sodium hydroxymethanesulphinate is a strong reducing agent and should be handled with care. It may release sulfur dioxide on contact with acids or under decomposition, which is irritating to eyes and respiratory tract. Avoid inhalation and prolonged skin contact. It should be stored and handled in a dry, well-ventilated area with appropriate personal protective equipment.
Keep the product dry and tightly sealed
Store in a cool, well-ventilated area, away from heat and moisture
Relative humidity should be maintained below 50%
Avoid contact with strong acids and oxidizing agents
Sodium hydroxymethanesulphinate is supplied in moisture-proof packaging to ensure stability. Common packaging options include:
25 kg drums or fiber drums with inner plastic lining
Customized bulk packaging available on request
