Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate

Basic Information

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CAS Number

5808-22-0

Molecular Formula

C10H10Na2O10S2

Molecular Weight

400.3 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Melting Point

>300 °C

Boiling Point

°Cat760mmHg

Water Solubility

Soluble in water.

Solubility

170g/l

SMILES

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C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].O.O.[Na+].[Na+]

InChI

InChI=1S/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

InChIKey

QUEAKWJKJBFNEG-UHFFFAOYSA-L

LogP

2.09220

Complexity

480

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Stability

Stable. Incompatible with strong oxidizers, strong acids, acid chlorides, acid anhydrides. Light sensitive.

Sensitiveness

对光线敏感

Synonyms & References

English

Chromotropic acid, disodium salt dihydrate
disodium 4,5-bis(oxidanyl)naphthalene-2,7-disulfonate dihydrate
4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt
J-610021
Chromotropic acid disodium salt dihydrate [MI]
disodium;4,5-dihydroxynaphthalene-2,7-disulfonate;dihydrate
Disodium 4,5-dihydroxynaphthalene-2,7-disulfonate Dihydrate
XGC00752
Disodium chromotropate dihydrate
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt, hydrate (1:2:2)
Q27294968
1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt
4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, disodium salt, dihydrate
UNII-Z441AY339V
AKOS024377827
AS-81039
4.5-Dihydroxy-2.7-naphthalene disulfonic acid disodium salt
4,5-Dihydroxynaphthalene-2,7-disulfonic acid, disodium salt dihydrate
Chromogen c dihydrate
Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate
5808-22-0
Chromotropic acid disodium salt dihydrate
D89685
A831727
3-Fluoro-4,6-dihydro-thieno[3,4-b]thiophene-2-carboxylicacidmethylester
Z441AY339V
Disodium chromotropate
MFCD00150612
3-Fluoro-4,6-dihydro-thieno[3,4-b]thiophene-2-carboxylic acid methyl ester
Disodium Chromotropate Dihydrate (Technical Grade)

MDL Number

MFCD00150612

FAQ

What are the physical and chemical properties of Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate (CAS: 5808-22-0)?

Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate is a white crystalline solid. Its molecular weight is approximately 411.17 g/mol. This compound has low solubility in water and high solubility in dilute acids. It is moderately reactive, especially towards bases and reducing agents. It is used in the preparation of various dyes and pigments, and as a component in analytical reagents.

How is Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate (CAS: 5808-22-0) typically synthesized?

Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate is usually synthesized through the sulfonation of 4,5-dihydroxynaphthalene and subsequent neutralization with sodium hydroxide. Common catalysts include concentrated sulfuric acid or fuming sulfuric acid. The reaction is carried out under controlled temperature and pressure conditions to achieve high yield and selectivity.

What industries use Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate (CAS: 5808-22-0)?

Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate is widely used in the dye and pigment industry. It is also utilized in the production of analytical reagents and in the development of sensors and semiconductors. Its properties make it suitable for applications requiring specific chromophoric groups and functional groups.

What precautions should be taken when handling Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate (CAS: 5808-22-0)?

When handling Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate, it is important to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Work should be conducted in a well-ventilated area or fume hood. Spills should be cleaned up using appropriate cleaning agents and waste should be disposed of according to local regulations. Always refer to the Safety Data Sheet (SDS) for detailed handling and disposal information.