Direct Green 85 is a dark grey or black powder that is soluble in water, producing a dark green color. It is a direct dye with good coloring rate and affinity for cellulose fibers, particularly at 80°C in a neutral or weak alkali dye bath.
72390-60-4
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Basic information
- Product Name: Direct Green 85
- Synonyms: Direct Green 85;Direct green 85 (C.I. 30387);Drak Green 2BNB;4-Amino-5-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)-2,7-naphthalenedisulfonic acid disodium salt;C.I.30387;Direct Dark Green BA
- CAS NO:72390-60-4
- Molecular Formula: C36H27N7O8S2Na2
- Molecular Weight: 775.79
- EINECS: N/A
- Product Categories: N/A
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: /
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: Direct Green 85(CAS DataBase Reference)
- NIST Chemistry Reference: Direct Green 85(72390-60-4)
- EPA Substance Registry System: Direct Green 85(72390-60-4)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 72390-60-4(Hazardous Substances Data)
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72390-60-4 Usage
Uses
Used in Textile Industry:Direct Green 85 is used as a dye for cotton, viscose, silk, and polyamide fibers due to its good affinity and coloring rate.
Used in Other Industries:
Direct Green 85 is also suitable for dyeing hemp, paper, soap shading, and color manufacturing.
Standard:
The standard for Direct Green 85 includes the following properties:
Acid Resistance: 5
Alkali Resistance: 3
Light Fastness: 3-4
Soaping: 3-4
Water Fading: 3
Stain Fading: 4
Stain: 3-4
These properties indicate that Direct Green 85 has good resistance to acids and light, moderate resistance to alkalis, and varying levels of fastness to soaping, water, and staining.
Preparation
3,3′-Dimethylbenzidine double nitriding, first with phenol coupling, and then in acid conditions and aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?and of accidentally coupled coupled nitrogen compounds.Standard
Acid ResistanceFading
StainISO
5Check Digit Verification of cas no
The CAS Registry Mumber 72390-60-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,3,9 and 0 respectively; the second part has 2 digits, 6 and 0 respectively.Calculate Digit Verification of CAS Registry Number 72390-60:
(7*7)+(6*2)+(5*3)+(4*9)+(3*0)+(2*6)+(1*0)=124
124 % 10 = 4
So 72390-60-4 is a valid CAS Registry Number.
72390-60-4Upstream product
72390-60-4Downstream Products
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Direct Green 85
