5808-22-0

Basic information

• Product Name: CHROMOTROPIC ACID DISODIUM SALT DIHYDRATE
• Synonyms: Chromotropic acid disodium salt dihydrate puriss. p.a., ACS reagent, for the detection of Ag, ClO3-, Cr, Hg, NO2-, NO32-, Ti, >=99.0% (T);Chromotropic acid disodium salt dihydrate technical grade;CHROMOTROPIC ACID DISODIUM SALT 2H2O;Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate;2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-, sodium salt, hydrate (1:2:2);MORDANT BROWN 7;MORDANT BROWN 7 DIHYDRATE;LABOTEST-BB LT01147788
• CAS NO: 5808-22-0
• Molecular Formula: C10H10Na2O10S2
• Molecular Weight: 400.29
• EINECS: 204-972-9
• Product Categories: Intermediates of Dyes and Pigments;Miscellaneous Biochemicals;Analytical Chemistry;Bipyridyls, etc. (Chelating Reagents);Chelating Reagents;Building Blocks;Chemical Synthesis;Organic Building Blocks;Sulfonic/Sulfinic Acids;Sulfur Compounds
• Mol File: 5808-22-0.mol
• Article Data: 0

Chemical Properties

• Melting Point: >300 °C(lit.)
• Appearance: off-white/Powder
• Storage Temp.: Store below +30°C.
• Solubility: 170g/l
• Water Solubility: Soluble in water.
• Stability: Stable. Incompatible with strong oxidizers, strong acids, acid chlorides, acid anhydrides. Light sensitive.
• Merck: 14,2241
• BRN: 3647189
• CAS DataBase Reference: CHROMOTROPIC ACID DISODIUM SALT DIHYDRATE(CAS DataBase Reference)
• NIST Chemistry Reference: CHROMOTROPIC ACID DISODIUM SALT DIHYDRATE(5808-22-0)
• EPA Substance Registry System: CHROMOTROPIC ACID DISODIUM SALT DIHYDRATE(5808-22-0)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 5808-22-0(Hazardous Substances Data)

Usage

Chemical Properties

white or gray to tan powder

Uses

Different sources of media describe the Uses of 5808-22-0 differently. You can refer to the following data:
1. 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate, is used to improve the visualization of trichothecenes on developed TLC plates. It serves as an intermediate in the production of dyes, pigments, chelating reagents, sulfonic and sulfinic acids.
2. Chromotropic acid disodium salt dihydrate may be employed as a chromogenic reagent for the quantification of dipyrone in various pharmaceutical preparations.

General Description

Chromotropic acid disodium salt dihydrate is a tan colored sodium salt.

Purification Methods

Recrystallise it from H2O or H2O by adding EtOH. It complexes with Ag, ClO3-, Cr, Hg, NO2 , -NO3 and Ti. [Beilstein 11 H 72, 11 I 307, 11 II 174, 11 III 174, 11 IV 576.]

InChI:InChI=1/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8;;;;/h1-4,11-12H,(H,13,14,15)(H,16,17,18);;;2*1H2/q;2*+1;;/p-2