产品描述
连二亚硫酸钠(俗称保险粉)是白色结晶粉末,具有弱的硫磺气味。 虽然在真空情况下呈现稳定状态,但它在热水和酸性溶液中易分解。
我司凭借先进的技术,产出的保险粉杂质少,浓度高,且稳定不易分解,从而帮助客户提高染色效率,提供无与伦比的染色质量,并且对于染色人员更加安全健康。
Item | Technical Grade | Food Grade | ||
90% Grade | 88% Grade | 85% Grade | ||
Na2S2O4 | ≥90% | ≥88% | ≥85% | ≥85% |
Iron(Fe) | ≤20ppm | ≤20ppm | ≤20ppm | ≤20ppm |
Zinc(Zn) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
EDTA | / | / | / | Qualified |
Arsenic | / | / | / | ≤1ppm |
Other heavy metal(as Pb) | / | / | / | ≤1ppm |
Formate | / | / | / | ≤0.05% |
Solution Appearance | Clear | Clear | Clear | Clear |
Water Insolubles | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |
Shelf Life(months) | 12 | 12 | 12 | 12 |