Azure A chloride

Basic Information

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CAS Number

531-53-3

Molecular Formula

C14H14ClN3S

Molecular Weight

291.8 g/mol

Basic Physical Properties

Melting Point

290 °C (dec.)

Density

1.1060

Solubility

H2O: soluble1mg/mL

SMILES

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C[N+](=C1C=CC2=NC3=C(C=C(C=C3)N)SC2=C1)C.[Cl-]

InChI

InChI=1S/C14H13N3S.ClH/c1-17(2)10-4-6-12-14(8-10)18-13-7-9(15)3-5-11(13)16-12;/h3-8,15H,1-2H3;1H

InChIKey

NALREUIWICQLPS-UHFFFAOYSA-N

LogP

-0.39970

Complexity

483

Safety Information

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Stability

Stable. Incompatible with strong oxidizing agents.

Synonyms & References

English

EINECS 208-510-7
NSC 374111
Giemsa's stain
Fast Giemsa Stain Kit
n-(7-amino-3h-phenothiazin-3-ylidene)-n-methylmethanaminium chloride
NSC-326661
N,N-Dimethylthionine
EINECS 263-491-2
CS-0022121
CHEBI:87637
METHYLTHIONINIUM CHLORIDE HYDRATE IMPURITY B [EP IMPURITY]
AZURE A CARBACRYLIC RESIN
Methylene Azure A
MS-24168
Azure A chloride, certified by the Biological Stain Commission, Dye content 70 %
Azure A chloride, certified by the Biological Stain Commission
BDBM50055937
Azure A chloride, Dye content >=70 %
Mancha Giemsa
62298-43-5
F72133
AMY22390
giemsa-stain
MFCD00012112
Dimethylthionine
CCRIS 9315
FT-0622538
DTXSID2040157
C.I. 52005
EINECS 257-438-2
A901233

MDL Number

MFCD00012112

Customs Code

2934300000

FAQ

What are the physical and chemical properties of Azure A chloride (CAS: 531-53-3)?

Azure A chloride is a crystalline compound with a molecular weight of approximately 472.88 g/mol. It has a high solubility in common organic solvents like ethanol and acetone but is practically insoluble in water. Chemically, it is relatively stable but can react with strong bases to form insoluble precipitates. Its color is a vibrant blue, which is characteristic of the dye.

How is Azure A chloride (CAS: 531-53-3) typically synthesized?

Azure A chloride is synthesized by reacting Azure A with hydrochloric acid. Common methods involve the use of concentrated HCl or fuming HCl. The reaction is typically carried out in a closed vessel under mildly acidic conditions to prevent decomposition. The yield is around 85-90% with good selectivity.

What industries use Azure A chloride (CAS: 531-53-3)?

Azure A chloride is widely used in the pharmaceutical industry for dyeing tablets and capsules. It is also utilized in the production of high-purity polymers, where its blue color is used for identification. Additionally, it is employed in the manufacturing of blue sensors and in various semiconductor applications for its distinctive color properties.

What precautions should be taken when handling Azure A chloride (CAS: 531-53-3)?

When handling Azure A chloride, appropriate personal protective equipment (PPE) such as safety goggles, gloves, and a lab coat is essential. It should be stored in a cool, dry area away from direct sunlight and heat sources. In case of spills, they should be cleaned up with care, preferably using a safety shower and eye wash station. Always consult the Safety Data Sheet (SDS) for detailed handling and emergency procedures.