【CAS】7631-90-5
Alias: Sodium bisulfite
Molecular formula: NaHSO3 Relative molecular mass: 104.061
الصيغة التركيبية:
1- خاصية المنتج
Sodium bisulfite is an inorganic compound with the chemical formula NaHSO3. It is a white crystalline powder with an unpleasant odor of sulfur dioxide. It is mainly used as a bleaching agent, preservative, antioxidant, and bacteriostatic agent.
2.
| المعلمة | الدرجة الصناعية | درجة الغذاء |
| Purity (NaHSO₃) | ≥95.0% | ≥97.0% |
| SO₂ Content | ≥58.0% | ≥60.0% |
| الحديد (Fe) | ≤0.005% | ≤0.002% |
| المعادن الثقيلة (Pb) | ≤10 ppm | ≤5 جزء في المليون |
| انسولوب الماء | ≤0.05% | ≤0.02% |
| pH (10% solution) | 3.5–4.5 | 4.0–4.5 |
3- نطاق التطبيق والاستخدام
Sodium Bisulfite is widely used as a food preservative (beverages, dried fruits), water treatment dechlorination agent, and textile bleaching auxiliary. It also serves in chemical synthesis and photography for its strong reducing properties.
4- العبوة والتخزين
Sodium bisulfite is packaged in 25kg inner PE film-coated kraft paper bags or plastic woven bags. For food-grade use, double-layer moisture-proof packaging is required. Store in a cool and dry place (<25℃), strictly sealed to prevent moisture and air (susceptible to oxidation), and keep away from acids and strong oxidants. Pay attention to ventilation during operation (SO₂ may be generated during decomposition). The shelf life is 12 months.
