Direct Red 31, Technical grade Dye content

CAS: 5001-72-9

Ref. 3D-FD41049

Product Information

• Name: Direct Red 31, Technical grade Dye content
• Synonyms: ,,,,, 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-, 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2), 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(phenylazo)-, disodium salt, Aizen Direct Rhoduline Red BH, Amanil Rhoduline Red B, Atlantic Brilliant Red 12B, Atul Direct Red 12B, Azine Fast Red 12BK, Belamine Fast Pink G, Belamine Red 12B, Benzanil Rose B, Benzo Rhoduline Red B, Benzo Rhoduline Red BA-CF, Chloramine Rose B, Chlorazol Rose B, Colonal Red 7B, Cresotine Pink 3B, Diacotton Rhoduline Red B, Diamine Rhoduline Red B, Diaphtamine Red 12B, Diazamine Fast Purpurine, Diazol Rose R, Direct Brilliant Red B, Direct Pink 12B, Direct Pink 3B, Direct Pink 5B, Direct Pink EG, Direct Red 12B, Direct Red M 12B, Direct Rhoduline Red B, Direct Rose RW, Direct Safranine RW, Disodium 7,7'-iminobis(4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate), Einecs 225-669-8, Enianil Fast Brilliant Red 12B, Erie Brilliant Red 12B, Fenamin Red B, Kayaku Direct Rhoduline Red B, Libia Red 12B, Mitsui Direct Brilliant Red B, Nippon Fast Red BB, Phenamine Rhoduline Red B, Pink 12B, Pontamine Red 12B, Tertrodirect Pink DR, Vondacel Red 12B, disodium (3E,3'E)-7,7'-iminobis[4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2-sulfonate]

Description

Direct Red 31 is a dye that is used in wastewater treatment. The dye has shown to be able to absorb light at an optimum wavelength of 543 nm, which is the wavelength of light that penetrates water more deeply than other wavelengths. Direct Red 31 has been shown to be effective in a variety of biological treatments, such as those involving activated sludge or trickling filters. This dye is also reactive and can form covalent bonds with organic molecules like fatty acids, leading to increased adsorption on the surface of particles. Additionally, this dye has high chemical stability and can withstand temperatures up to 230 degrees Celsius.

• Brand: Biosynth

Chemical properties

• Purity: Min. 95%