ChemicalBook--->CAS DataBase List--->149-46-2

149-46-2

149-46-2 Structure

149-46-2 Structure
IdentificationBack Directory
[Name]

4,5-dihydroxybenzene-1,3-disulphonic acid
[CAS]

149-46-2
[Synonyms]

Tiron free acid
Pyrocatechol-3,5-disulfonic acid
1,2-Dihydroxy-3,5-benzenedisulfonic acid
1,2-Dihydroxybenzene-3,5-disulfonic acid
4,5-Dihydroxybenzene-1,3-disulfonic acid
1,3-Benzenedisulfonicacid, 4,5-dihydroxy-
4,5-dihydroxybenzene-1,3-disulphonic acid
4,5-dihydroxy- (9ci)1,3-Benzenedisulfonic acid
[EINECS(EC#)]

205-742-0
[Molecular Formula]

C6H6O8S2
[MDL Number]

MFCD00137788
[MOL File]

149-46-2.mol
[Molecular Weight]

270.237
Chemical PropertiesBack Directory
[Boiling point ]

98°C
[density ]

1.649 (estimate)
[refractive index ]

1.6000 (estimate)
[pka]

pK3:7.66(+2);pK4:12.6(-3) (25°C)
Hazard InformationBack Directory
[Definition]

ChEBI: Chymopapain is an organosulfur compound and a sulfonic acid derivative.
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