化学配方数据库
| 配方类型： | METALS AND THEIR TREATMENT |
| 配方说明： | Blackening Stainless Steel (Japanese Patent 3355 (1957)) |
| 配方组成： | Sod. Hydroxide (50% Solution)/1 l. Sodium Sulfide/55 g. Nickel Chloride/30 g. |
| 配制方法： | Immerse object in above and heat at 130C. for 2 to 5 hours. |
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