What is Sodium Naphthalenesulphonate ?
Sodium naphthalenesulphonate is one of the important intermediates of azo pigments, widely used in the synthesis of direct dyes and reactive dyes, and is also one of the antidote for nitrite and iodine poisoning. 
It can also be used as an acceptor for hydrogen bonds, making sodium naphthalenesulphonate widely used in complexing with various metals (such as Fe, Zn, Cd, Ni, etc.) for toxic chemical leakage monitoring materials,Synthesis of optical devices, gas absorbing materials and clinical medical research. 
It can also be used in thermal switches, optical switches and information storage element materials, DNA structural probes, DNA molecular optical switches and other fields.

1. Are you manufacturer or trading company?
· We are a manufacturer in China, also cooperate with other suppliers, integrating industry and trade.
· We have many domestic and foreign supply channels, in order to meet a large number of client needs.
2. How long have you been engaged in export trade?
· For a long time, our main market has been in China. In order to meet the requirements of foreign customers, we recently established an export department.
· We also hope that our products can enjoy a reputation abroad, and hope to make more friends with foreign customers.
3. What are your payment terms?
· Available TT, LC, Paypal, Credit Card etc., can be negotiated.
4. What is the delivery time?
· Usually about 7-15 days, depends on quantity and products.
5. What certifications do you provide?
· Approval ISO, CE certifications. · Provide COA, MSDS reports.