1.Description
Sulphur black can be classified as BR (Bluish-Reddish) and B(Bluish)by their different tones, and the tone and quality can be adjusted according to the customer's requirements.
Appearance: Flashing black flakes or granules
Product character: Sulphur black is insoluble in water or ethanol, it appears as green-black in the solution of sodium sulfide, appears bluish when put caustic soda in the solution of sulphur black, and appears greenish precipitate with hydrochloric acid
It's miniature soluble in cold sulfuric acid, turns to greenish blue precipitate after it's warmer, then turns to black-blue when keeps heating. Sulphur dyes have good dye-uptake and level dyeing.
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| Sulphur Black BR  Specification | |
| Dyes name | Sulphur Black BR |
| Quality | 200%,220% |
| Appearance | Black granule |
| Color | Same as Standard |
| Strength | 200%,220% |
| Moisture | less than2.9% |
| Content of sodium sulfide-insoluble matter | less than 0.6% |
| Free sulphur | 0.31% |
| Degree of fineness (screening hangover content by  80  um),%  |
 less than3% |
Sulphur Black is mainly used dyeing on cotton, also used dyeing on cambric, viscose and vinyl on.
4.Package:
25kg/bag,16MT/20'FCL
5.Storage:
Storage & Transportation: The product must be stored in shade, dry & well_ventilated warehouse. Avoid to be contacted with oxidizing chemicals and combustible organic substance. Keep it away from direct sunlight, heat, sparks and open flames. Carefully handle the product and avoid damaging the package.
6.FAQ:
Q1: Can I visit your company?Â
Yes, welcome to visit our company and inform us in advance.Â
Q2: Can you send a sample for our reference?Â
Of course. Sample can be sent on your request, by the way, trial order is available.
Q3: What is the payment item?Â
T/T or L/C at sight is acceptable, and other payments are negotiable.Â
Q4.How to confirm the quality with us before start to produce?Â
 (1)You can get  samples  choose among it  , then we make the quality according to that.
 (2)Send us your sample, and we make the product according to your quality.
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