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CAS RN: 992-59-6 | Product Number: B0781

Benzopurpurine 4B

  • Direct Red 2
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Product Number B0781
Molecular Formula / Molecular Weight C__3__4H__2__6N__6Na__2O__6S__2 = 724.72  
Physical State (20 deg.C) Solid
Condition to Avoid Light Sensitive
CAS RN 992-59-6
PubChem Substance ID 87563776
Merck Index (14) 1101
Colour Index 23500
MDL Number


Appearance Orange to Brown powder to crystal
Lambda max. 480.0 to 495.0 nm(pH 4.4 buffer sol.)
Absorbance min. 0.850(20mg/L, pH 4.4 buffer sol., 480.0 to 495.0 nm)(calcd.on dried substance)
Drying loss max. 10.0 %
Properties (reference)
Maximum Absorption Wavelength 481(pH 4.4 buffer sol.) nm
Pictogram Pictogram
Signal Word Danger
Hazard Statements H350 : May cause cancer.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P202 : Do not handle until all safety precautions have been read and understood.
P201 : Obtain special instructions before use.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P308 + P313 : IF exposed or concerned: Get medical advice/ attention.
P405 : Store locked up.
Related Laws:
EC Number 213-594-3
RTECS# QK1765000
Transport Information:
HS Number 3204140000
PubMed Literature

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