Archive for the ‘dope’ Category
Wednesday, December 17th, 2008
Naphthol AS/PH
C.I Naphthol 14(37558)
Azoic Dyes
Structural formula:
Molecular formula: C19H17O3N
Molecular weight: 307.35
Physical and chemical properties:
The appearance is buff powder, insoluble in water and sodium carbonate solution. Melting point: 157-158°C.
Specification:
Appearance: buff powder
Content: ≥98%
Insolubles in alkali solution: ≤0.5%
Application: It is used as grounding and printing cotton goods.
Packing: In 25kgs net iron drums woven bags ...
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Wednesday, December 17th, 2008
Naphthol AS/OL
C.I Naphthol 20(37530)
Azoic Dyes
Structural formula:
Molecular formula: C18H15O3N
Molecular weight: 293.34
Physical and chemical properties:
The appearance is buff brown uniform powder. Initial melting point is 167°C. Insoluble in water. Soluble in alcohol. It is yellow transparent solution in sodium hydroxide solution.
Specification:
Appearance: Brown to cream-colored uniform powder
Shade: Similar to the standard
I.M.P of dry ...
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Wednesday, December 17th, 2008
Naphthol AS/BO
C.I Naphthol 4(37560)
Azoic Dyes
Structural formula:
Molecular formula: C21H15O2N
Molecular weight: 313.37
Physical and chemical properties:
Appearance is gream-colored powder, insoluble in water. Sodium in xylene. It shows yellow colored when in caustic solution. Melting point: 222-223°C.
Specification:
Appearance: light cream-colored brown uniform powder
Shade: similar to the standard
Strength: 100
I.M.P. of dry product: ≥217°C
Insolubles in alkali solution: ...
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Wednesday, December 17th, 2008
Naphthol AS/D
C.I Naphthol 18(37520)
Azoic Dyes
Structural formula:
Molecular formula: C18H15O2N
Molecular weight: 277.34
Physical and chemical properties:
Appearance is cream-colored yellow uniform powder, initial melting point of dry product 193°C. Insoluble in water. It is yellow transparent solution when soluble in sodium hydroxide. It can couple with diazoic salts of aromatic amine series to produce ...
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Wednesday, December 17th, 2008
Naphthol AS
C.I Naphthol 2(37505)
Azoic Dyes
Structural formula:
Molecular formula: C17H13O4N2
Molecular weight: 261.31
Physical and chemical properties:
Appearance is light cream-colored uniform powder. Initial melting point is more than 247°C. Soluble in alcohol and sodium hydroxide solution. And its solution is yellow clear liquid. It can couple with diazo salts of aromatic anilines to produce ...
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