常温无毒发黑剂配方常温发黑由于方便、快捷、节能、工人劳动轻，因而生产中应用愈来愈广泛，取代了传统的磁性发蓝工艺。然而，常温发黑配方中有亚Ｄ饺，毒性较大，不宜推广使用。经研究我们现有的配方中亚硝酸钠的含量仅为１０ｇ／Ｌ，毒性较低，便于推广使用，具体配方... Non-toxic blackening agent at room temperature Blackening at room temperature as convenient, fast, energy-saving, labor-saving, and thus more and more widely used in production, replacing the traditional magnetic blue hair technology. However, there are Asian D dumplings at room temperature black formula, toxicity is not suitable for promotion. After studying our existing formula sodium nitrite content of only 10g / L, lower toxicity, easy to promote the use of specific formula ...