直接黑38 (CAS No.381937-37-7)
- 物化性质
- 黑色均匀粉末。微溶于水，易溶于热水，水溶液呈蓝黑色；微溶于乙醇，不溶于丙酮、苯等有机溶剂。遇浓硫酸呈蓝黑色，稀释后生成蓝黑色沉淀；遇浓硝酸呈暗红色。染色适宜pH为中性至弱碱性。
- 外观
- 黑色均匀粉末
English description（英文原文，共 1053 字符）
Product Name:Direct Black 38
English Name:Direct Black 38
CAS No.:1937-37-7
Aliases:Direct Black RN, Direct Black EX, Direct Black A, C.I. Direct Black 38
Molecular Formula:C34H25N9Na2O7S2
Physical Properties:Black uniform powder. Slightly soluble in water, readily soluble in hot water, forming a blue-black solution; slightly soluble in ethanol, insoluble in acetone, benzene and other organic solvents. Turns blue-black with concentrated sulfuric acid, giving a blue-black precipitate on dilution; turns dark red with concentrated nitric acid. Suitable for dyeing at neutral to weakly alkaline pH.
Uses:It is mainly used for dyeing and printing of cellulose fibers such as cotton, linen and viscose, and for dyeing of silk and wool fabrics. It is also widely used for coloring leather, paper and wood pulp, and can be used as a biological stain.
Technical Specifications:
Appearance: black uniform powder
Color shade: blue-black
Strength (relative to standard): 100%
Moisture content: ≤5%
Fineness (residue on 80-mesh standard sieve): ≤5%
English Name:Direct Black 38
CAS No.:1937-37-7
Aliases:Direct Black RN, Direct Black EX, Direct Black A, C.I. Direct Black 38
Molecular Formula:C34H25N9Na2O7S2
Physical Properties:Black uniform powder. Slightly soluble in water, readily soluble in hot water, forming a blue-black solution; slightly soluble in ethanol, insoluble in acetone, benzene and other organic solvents. Turns blue-black with concentrated sulfuric acid, giving a blue-black precipitate on dilution; turns dark red with concentrated nitric acid. Suitable for dyeing at neutral to weakly alkaline pH.
Uses:It is mainly used for dyeing and printing of cellulose fibers such as cotton, linen and viscose, and for dyeing of silk and wool fabrics. It is also widely used for coloring leather, paper and wood pulp, and can be used as a biological stain.
Technical Specifications:
Appearance: black uniform powder
Color shade: blue-black
Strength (relative to standard): 100%
Moisture content: ≤5%
Fineness (residue on 80-mesh standard sieve): ≤5%
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常见问题
- 直接黑38的 CAS 号是多少？
- 直接黑38的 CAS 号是 381937-37-7。
- 直接黑38的分子式和分子量是什么？
- 直接黑38的分子式为 C34H25N9Na2O7S2。
- 直接黑38的英文名称是什么？
- 直接黑38的英文名称为 Direct Black 38。
- 直接黑38还有哪些别名？
- 直接黑38又称 直接黑RN、直接黑EX、直接黑A、C.I. Direct Black 38。
- 直接黑38有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条直接黑38供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 直接黑38的供应商主要分布在哪些地区？
- 直接黑38的供应商主要分布在 上海市（1 条） 等地。
- 直接黑38有哪些级别可选？
- 平台上直接黑38的供应级别包括 工业级。
- 直接黑38的报价单位是什么？
- 直接黑38的报价单位主要有 千克。
- 哪里可以查到直接黑38的价格？
- 掌上化工直接黑38产品页汇总了各供应商的最新报价与规格，地址：/chemicals/381937-37-7/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
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