91-34-9
英文名称
4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid
CAS
91-34-9
分子式
C26H20N4O8S2
分子量
580.59
MOL 文件
91-34-9.mol
结构式
基本信息
英文别名
Direct Yellow 4 dye
75508-33-7 (Di-potassium salt)
68966-53-0 (Hydrochloride salt)
3051-11-4 (Di-hydrochloride salt)
75673-23-3 (Potassium.hydrochloride salt)
79069-96-8 (Potassium.hydrochloride salt)
4,4''-Vinylenebis(4'-hydroxyazobenzene-3-sulfonic acid)
4,4'-Bis(p-hydroxyphenylazo)-2,2'-stilbenedisulfonic acid
4,4'-Bis(4-hydroxyphenylazo)stilbene-2,2'-disulfonic acid
4,4'-Bis[(4-hydroxyphenyl)azo]-2,2'-stilbenedisulfonic acid
75508-33-7 (Di-potassium salt)
68966-53-0 (Hydrochloride salt)
3051-11-4 (Di-hydrochloride salt)
75673-23-3 (Potassium.hydrochloride salt)
79069-96-8 (Potassium.hydrochloride salt)
4,4''-Vinylenebis(4'-hydroxyazobenzene-3-sulfonic acid)
4,4'-Bis(p-hydroxyphenylazo)-2,2'-stilbenedisulfonic acid
4,4'-Bis(4-hydroxyphenylazo)stilbene-2,2'-disulfonic acid
4,4'-Bis[(4-hydroxyphenyl)azo]-2,2'-stilbenedisulfonic acid
物理化学性质
| 密度 | 1.50±0.1 g/cm3(Predicted) |
| 酸度系数(pKa) | -1.29±0.50(Predicted) |
| EPA化学物质信息 | C.I. Direct Yellow 4 (91-34-9) |
安全数据
| TSCA | TSCA listed |