Disodium 3-hydroxy-2,7-naphthalenedisulfonate

Basic Information

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CAS Number

135-51-3

Molecular Formula

C10H6Na2O7S2

Molecular Weight

348.3 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

SMILES

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C1=CC(=CC2=CC(=C(C=C21)O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

InChI

InChI=1S/C10H8O7S2.2Na/c11-9-4-6-1-2-8(18(12,13)14)3-7(6)5-10(9)19(15,16)17;;/h1-5,11H,(H,12,13,14)(H,15,16,17);;/q;2*+1/p-2

InChIKey

VNEBWJSWMVTSHK-UHFFFAOYSA-L

LogP

2.51520

Complexity

501

Safety Information

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Hazard Statement

Stability

Stable. Incompatible with strong oxidizing agents.

Synonyms & References

English

AI3-28535
Disodium 3-hydroxy-2,7-naphalenedisulfonate
3-Hydroxy-2,7-naphthalenedisulfonic acid,disodium salt
3-Hydroxynapthlene-2,7-disulfonic acid sodium salt
NSC 5872
H11851
CCRIS 7448
2-Naphthol-3,6-disulfonic acid sodium salt
R Acid Disodium Salt
2-Naphthol-3,6-disulfonic acid disodium salt
CAS-135-51-3
Disodium 2-hydroxynaphthalene-3,6-disulfonate
disodium;3-hydroxynaphthalene-2,7-disulfonate
NSC-5872
MFCD00065915
disodium 3-hydroxynaphthalene-2,7-disulfonate
135-51-3
AS-15462
Q27265717
3-Hydroxy-2,7-naphthalenedisulfonic acid disodium salt
2,7-Naphthalenedisulfonic acid, 3-hydroxy-, sodium salt (1:2)
6Y99O91ULZ
3-Hydroxynaphthalene-2,7-disulfonic acid, disodium salt
SY037070
UNII-6Y99O91ULZ
R-salt
2-hydroxynaphthalene-3,6-disulphonic acid di sodium salt
R salt
2-Naphthol-3,6-disulfonic acid, disodium salt
Disodium 2-hydroxy-3,6-naphthalene disulfonate
W-108268

MDL Number

MFCD00065915

Customs Code

2922210000

FAQ

What is Disodium 3-hydroxy-2,7-naphthalenedisulfonate (CAS: 135-51-3)?

Disodium 3-hydroxy-2,7-naphthalenedisulfonate, with the CAS number 135-51-3, is a sodium salt of 3-hydroxy-2,7-naphthalenedisulfonic acid. It is a white crystalline solid that is commonly used as a pH indicator and buffer in various chemical and industrial applications. The compound is known for its ability to change color in response to pH changes, making it useful in determining acidity or alkalinity levels.

What are the main uses of Disodium 3-hydroxy-2,7-naphthalenedisulfonate (CAS: 135-51-3)?

Disodium 3-hydroxy-2,7-naphthalenedisulfonate is primarily used as a pH indicator, especially in the range of pH 4 to 6, where it exhibits a distinct color change. It also serves as a buffer in pharmaceutical and laboratory settings. Additionally, it is used in the production of dyes, as a component in some cleaning products, and in the formulation of certain food additives for pH control.

Is Disodium 3-hydroxy-2,7-naphthalenedisulfonate (CAS: 135-51-3) safe?

Disodium 3-hydroxy-2,7-naphthalenedisulfonate is generally considered safe when handled in accordance with standard chemical safety protocols. However, as with any chemical, it should be used with appropriate protective measures, such as gloves and goggles, to avoid direct contact. It is not classified as highly toxic, but safety data sheets (SDS) should be consulted for detailed handling and disposal instructions.

How should Disodium 3-hydroxy-2,7-naphthalenedisulfonate (CAS: 135-51-3) be stored?

Disodium 3-hydroxy-2,7-naphthalenedisulfonate should be stored in a cool, dry, and dark place to maintain its stability and effectiveness. It is best kept in a tightly sealed container away from moisture and light exposure. The recommended storage temperature is typically between 15°C and 25°C, and it should be protected from strong acids or bases to prevent degradation.