Evans blue / AZO Blue

English name：Evans blue；Direct Blue 53；C.I. 23860；Tetrasodium 6,6'-((3,3'-dimethyl-(1,1'-biphenyl-4,4'diyl)bis(azo)bis(4-amino-5-hydroxy-1,3-naphthalenedisulphonate)

Other names: Evans land; Evansland; Azo blue;  6,6 '- [[3,3' - dimethyl (1,1 '- diphenyl) - 4,4' - diyl] bis (azo)] bis (4-amino-5-hydroxy-1,3-naphthalene disulfonic acid) tetrasodium salt; Sodium salt of 4,4 'bis [7 - (1-amino-8-hydroxy-2,4-disulfo) naphthalene azo] - 3,3' - biphenylbenzene

CAS No.: 314-13-6

C34H24N6Na4O14S4=960.82

Grade: ar

Dye content: ～ 80%

Infrared spectrum identification: qualified

Absorbance (e1m): ≥ 504 (H2O, 605 ～ 613nm)

Loss on drying: ≤ 10.0%

Physicochemical properties: Blue crystal. It has a green metallic luster. It is soluble in water, ethanol, acid and alkali. It changes color when the pH is close to 10 and can be destroyed by strong oxidizing and reducing agents. Neutral salt solution is added to precipitate. The aqueous solution is relatively stable and can be sterilized under high pressure of 6.8kg for 30 minutes. The maximum absorption wavelength is 611nm. Toxic, the minimum toxic dose (rat, abdominal cavity) is 850mg / kg. Teratogenic possibility

Purpose: biochemical research. Biological stain. Determination of blood volume

Saving: RT