Hydroxynaphthol blue

Purity: indicator for metal titration

Synonym(s): 1-(2-Hydroxy-4-sulfo-1-naphthylazo)-2-naphthol-3, 6-disulfonic acid trisodium salt； 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2, 7-disulfonic acid trisodium salt；

Formula: C20H11N2Na3O11S3 Molecular Weight: 620.47

CAS Number: 63451-35-4 EC Number: 264-197-7 MDL Number: MFCD00036393 PubChem CID: 113232

Properties

Shelf life: 720 days

Solubility:

Sensitivity:

Boiling point:

Melting point:

InChl: InChI=1S/C20H14N2O11S3.3Na/c23-15-9-16(35(28, 29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25, 26)27)7-10(12)8-17(20(19)24)36(31, 32)33; ; ; /h1-9, 23-24H, (H, 25, 26, 27)(H, 28, 29, 30)(H, 31, 32, 33); ; ; /q; 3*+1/p-3

Safety Information

Pictograms: GHS07

Signal Word: Warning

Hazard Statements: H315; H319; H335

Precautionary Statements: P261; P305+P351+P338; P280; P302+P352; P321; P405; P501; P264; P271; P304+P340; P403+P233; P362+P364; P264+P265; P337+P317; P332+P317; P319

WGK: 3

Storage: Room temperature

Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves