Direct Red 31

Direct Red 31

TECHNICAL DATA SHEET

Product name:

DIRECT RED 31 POWDER

CAS NO.:

5001-72-9

C.I.:

29100

EINECS:

225-669-8

Chemical formula:

C32H23N5O8S2.2Na

Molecular structure:

Appearance:
Shade:
Strength:
Odor:
Specific gravity:
PH value:
Moisture /%:
Insoluble matter /%:
Light fastness:
Washing fastness(40°С)
Rubbing fastness:
Sublimation fastness (180°С 30sec):
Perspiration fastness:

Red powder
Similar to the standard
150±3%
Weak odor  
1.0-1.1
7.0-9.0
<5.0
<0.5
2
3
Dry: 4
Wet: 2
2
3

Performance and features:

The product is mainly used for dyeing cotton, hemp, mucilage glue, silk, and mucilage or cotton mixed textile fabrics.

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