| Quantity: | |
|---|---|
7757-83-7
Boss Chemical
7757-83-7
| Sodium sulfite Basic information | |
| Product Name: | Sodium sulfite |
| CAS: | 7757-83-7 |
| MF: | Na2O3S |
| MW: | 126.04 |
| Mol File: | 7757-83-7.mol |
| Sodium sulfite Structure | |
| Sodium sulfite Chemical Properties | |
| Melting point | 500 °C |
| density | 2.63 |
| bulk density | 1480kg/m3 |
| refractive index | 1,484 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| Specific Gravity | 2.633 |
| color | White to slightly yellow |
| Odor | Odorless |
| PH Range | 9.0 - 10.5 at 126 g/l at 25 °C |
| PH | 9.0-10.5 (25℃, 1M in H2O) |
| Water Solubility | 23 g/100 mL (20 ºC) |
| Sensitive | Hygroscopic |
| Merck | 148,682 |
| Stability: | Stable. Incompatible with strong acids. Moisture and air sensitive. |
| Cosmetics Ingredients Functions | REDUCING |
| CAS DataBase Reference | 7757-83-7(CAS DataBase Reference) |
| NIST Chemistry Reference | sodium sulfite(7757-83-7) |
| EPA Substance Registry System | Sodium sulfite (7757-83-7) |
| Absorption | cut-off at 265nm in H2O at 1M |
| 产品名称 / Product Name | 指标名称 / Parameter | HG/T2967-2010 指标 / Specification (HG/T2967-2010) | 分析结果 / Analysis Result | ||
|---|---|---|---|---|---|
| 优等品 Premium Grade | 一等品 First Grade | 合格品 Qualified Grade | |||
| 无水亚硫酸钠 Sodium Sulfite Anhydrous | 亚硫酸钠 (以 Na₂SO₃计)，(w)% ≥ Sodium Sulfite (as Na₂SO₃), (w)% ≥ | 97 | 96 | 93 | 97.56 |
| 铁 (Fe)，% ≤ Iron (Fe), % ≤ | 0.003 | 0.005 | 0.01 | 0.002 | |
| 水不溶物，% ≤ Water Insolubles, % ≤ | 0.02 | 0.03 | 0.05 | 0.018 | |
| 游离碱 (以 Na₂CO₃计)，% ≤ Free Alkali (as Na₂CO₃), % ≤ | 0.1 | 0.4 | 0.6 | 0.06 | |
| 硫酸钠 (Na₂SO₄)，% ≤ Sodium Sulfate (Na₂SO₄), % ≤ | 2.5 | — | — | 2.1 | |
| 氯化钠 (NaCl)，% ≤ Sodium Chloride (NaCl), % ≤ | 0.10 | 1.0 | — | 0.1 |
