Black Powder Sulfur Black

AppearanceBlack uniform powder or granules
Light intensity100±5
ShadeApproximate to the standard
Insoluble impurities content in water(%)0.5 max
Moisture (%)7.0 max
Fineness 60°c
(through the 250um sieve residue content%)
0.5 max
Fineness(through the 590um sieve residue content%)0.5 max

Sulfur Black Basic Information
Sulfur Black is a synthetic dye that is black and is derived from sulfur compounds. It has a molecular formula of C6H4N2O5S2 and a molecular weight of 240.23 g/mol. Sulfur black is insoluble in water or ethanol, green black in sodium sulfide solution, blue when caustic soda is put into black sulfur solution, and green precipitates when hydrochloric acid is used. The product is slightly soluble in cold sulfuric acid and turns green and blue after heating. It turns black and blue when heated continuously. Sulfide dyes have good dye uptake and level.

Application of Sulfur Black

Sulfur Black is a widely used dye in the textile industry for coloring fabrics. In Brazil, Sulfur Black is commonly used for dyeing cotton, viscose, and other cellulosic fibers. Due to its excellent color fastness properties, it is a preferred dye for applications that require dark and intense black colors, such as in the production of denim and other dark-colored garments. Sulfur Black is also used in the dyeing of various textiles, including home furnishings and upholstery. The dyeing process involves using sodium sulfide or sodium hydrosulfite to make the water-insoluble dye soluble, allowing it to penetrate the fibers and produce a uniform color.


What is your minimum order quantity and payment term?
The product determines the minimum order quantity. For those with simple export procedures, the quantity limit may be very low. And some products only require full container shipment.
How long will it take to get the good?
Depending on your location, for small orders, please expect 5-7 days by DHL, UPS, TNT, FEDEX, or EMS. For mass orders, please allow 5-8 days by air and 20-35 days by sea.
How can I place an order?
You can send an inquiry directly through the contact form below to get detailed order information. We will explain the detailed process.
Are there any restrictions on shipping chemicals and additives?
Yes, due to the nature of some chemicals and additives, there may be restrictions on shipping them internationally. We ensure that our products are shipped in compliance with all relevant regulations, including the International Air Transport Association (IATA) Dangerous Goods Regulations and the International Maritime Dangerous Goods (IMDG) Code. Please contact our customer service team to discuss any specific shipping restrictions for your order.
Can I track my order once it has been shipped?
Yes, once your order has been shipped, we will provide you with a tracking number so that you can monitor the progress of your shipment.

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Since launching in April of 2014, Reiheychem now manages additive supplier work for more than 120+ clients in 30+ countries. We'd love for you to join!
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