Chromotrope 2R

Basic Information

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CAS Number

4197-07-3

Molecular Formula

C16H10N2Na2O8S2

Molecular Weight

468.4 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Melting Point

No data available

Boiling Point

No data available

Density

No data available

Water Solubility

Soluble in water (1 mg/ml).

Flash Point

No data available

Vapor Pressure

No data available

SMILES

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C1=CC=C(C=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O.[Na+].[Na+]

InChI

InChI=1S/C16H12N2O8S2.2Na/c19-12-8-11(27(21,22)23)6-9-7-13(28(24,25)26)15(16(20)14(9)12)18-17-10-4-2-1-3-5-10;;/h1-8,19-20H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2

InChIKey

GXEAXHYQKZAJGB-UHFFFAOYSA-L

LogP

4.63620

Complexity

756

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 oxidizing agents.

Sensitiveness

对光敏感

Synonyms & References

English

EINECS 224-085-0
Acilan chromotrope RR
2-(Phenylazo)chromotropic acid disodium salt
4,5-Dihydroxy-3-phenylazo-2,7-naphthalenedisulfonic Acid Disodium Salt
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(phenylazo)-, disodium salt
Acid Chromotrope 2R
FT-0623802
MFCD00003955
SCHEMBL287038
Acid Red 29
4197-07-3
sodium (E)-4,5-dihydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonate
carmoisine 6R
SCHEMBL2858863
C.I. ACID RED 29, DISODIUM SALT
Cromatrope 2R
Brasilan Fast fuchsine G
Hispacid fuchsin G
AKOS004906808
C.I. 16570
Chromotrope 2R (C.I. 16570)
CHEBI:87106
C.I. Acid Red 29
NS00048282
AKOS024285050
LLE7AS9RKD
FT-0623803
Fast fuchsine G
Q18620079
NSC 7829
Disodium 4,5-dihydroxy-3-phenylazonaphthalene-2,7-disulphonate

MDL Number

MFCD00003955

FAQ

What is Chromotrope 2R (CAS: 4197-07-3)?

Chromotrope 2R (CAS: 4197-07-3) is a colorless or pale yellow crystalline compound used as a pH indicator. It changes color based on the pH level of its environment.

What are the main uses of Chromotrope 2R (CAS: 4197-07-3)?

Chromotrope 2R (CAS: 4197-07-3) is primarily used as a pH indicator in analytical chemistry, food and beverage testing, and pharmaceutical applications to determine the acidity or basicity of solutions.

Is Chromotrope 2R (CAS: 4197-07-3) safe?

Chromotrope 2R (CAS: 4197-07-3) is generally considered safe for laboratory use. However, it should be handled with care to avoid prolonged skin contact and inhalation of dust. Protective gloves and goggles are recommended during use.

How should Chromotrope 2R (CAS: 4197-07-3) be stored?

Chromotrope 2R (CAS: 4197-07-3) should be stored in a cool, dry place away from direct sunlight and moisture. It should be kept in a tightly sealed container to prevent degradation. Avoid storing it in high-temperature environments to maintain its stability.