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ACID RED 66

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ACID RED 66 Basic information

Product Name:
ACID RED 66
Synonyms:
  • BIEBRICH SCARLET, SODIUM SALT
  • BIEBRICH SCARLET STAIN
  • BIEBRICH SCARLETTE
  • BIEBRICH SCARLET, WATER SOLUBLE
  • BIEBRICH SCARLET WS
  • CI NO 26905
  • CI 26905
  • CROCEIN SCARLET
CAS:
4196-99-0
MF:
C22H17N4NaO7S2
MW:
536.51
EINECS:
224-084-5
Product Categories:
  • Organics
Mol File:
4196-99-0.mol
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ACID RED 66 Chemical Properties

Melting point:
181-188 °C
Flash point:
300°(572°F)
storage temp. 
room temp
solubility 
ethanol: 1 mg/mL
form 
Powder
Colour Index 
26905
color 
Dark brown powder
Water Solubility 
Appreciable (> 10%)
BRN 
3883900
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
4196-99-0
EPA Substance Registry System
C.I. Acid Red 66, disodium salt (4196-99-0)
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Safety Information

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-20/21/22
Safety Statements 
37/39-26-36
WGK Germany 
3
TSCA 
Yes
HS Code 
32041200

MSDS

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ACID RED 66 Usage And Synthesis

Chemical Properties

dark red powder

Uses

Ponceau BS has been used in Masson′s trichrome stain for the staining of collagen. It has also been used for eosinophil staining.

Definition

ChEBI: An organic sodium salt having 2-[(2-hydroxynaphthalen-1-yl)diazenyl]-5-[(4-sulfonatophenyl)diazenyl]benzene-1-sulfonate as the counterion. Used as a plasma stain in Masson's trichrome.

Preparation

3,4′-Disulfo-4-aininoazobenzene?diazo, and Naphthalen-2-ol coupling.

Biochem/physiol Actions

Ponceau BS is used in Masson′s trichrome staining procedure, along with acid fuchsin, for the labeling of collagen and muscle red.

Properties and Applications

yellow light red. Soluble in water for orange red, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. In the dark for the strong sulfuric acid, diluted for orange red, then have a brown precipitation. In nitric acid solution for blue, then into amber color. In water solution to join strong hydrochloric acid have red precipitate; Add thick sodium hydroxide solution have yellow brown precipitation.

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

ACID RED 66Supplier

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