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HomeProduct name listCHROMOTROPE 2R

CHROMOTROPE 2R

Synonym(s):2-(Phenylazo)chromotropic acid disodium salt;Acid Red 29

  • CAS NO.:4197-07-3
  • Empirical Formula: C16H10N2Na2O8S2
  • Molecular Weight: 468.37
  • MDL number: MFCD00003955
  • EINECS: 224-085-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-07-31 17:39:26
CHROMOTROPE 2R Structural

What is CHROMOTROPE 2R?

Chemical properties

dark brown powder

The Uses of CHROMOTROPE 2R

Suitable for modified Gomori Trichrome stain

The Uses of CHROMOTROPE 2R

Employed as an indicator for complexometry. It is also applied as a stain used in modified Gomori Trichrome stain. Used as a stain for cytology.

What are the applications of Application

Chromotrope 2R is a stain used in modified Gomori Trichrome stain

Definition

ChEBI: An organic sodium salt that is the disodium salt of 4,5-dihydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid. It is used as the plasma stain in trichrome techniques.

Preparation

aniline diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid?coupling.

Properties and Applications

red. Soluble in water for red orange, soluble in soluble fiber element, moderate soluble in alcohol and acetone is red light purple, insoluble in other organic solvents. The strong sulfuric acid for wine red, diluted into pink; In nitric acid solution for red, and then to orange. Add hydrochloric acid in aqueous solution for the red orange; Add thick sodium hydroxide solution for deep red wine.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 4-5 2 2 1 2
AATCC 4-5 2-3 1 1 2-3

Properties of CHROMOTROPE 2R

storage temp.  Store at RT.
form  Crystalline Powder
Colour Index  16570
color  Reddish-brown
Water Solubility  Soluble in water (1 mg/ml).
Stability: Stable. Incompatible with strong oxidizing agents.

Safety information for CHROMOTROPE 2R

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for CHROMOTROPE 2R

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