Description
Catalogue Number	115936
Synonyms	Tetraiodofluorescein disodium salt
Description	ERYTHROSINE B (C.I. 45430) FOR MICROSCOP
Overview	Erythrosin B (C.I. 45430) is a CERTISTAIN® dry dye for microscopy that is often used as a counterstain, vizualising proteins, connective tissues, fibers and keratin in sample material of human origin. Depending on user requirements and personal preferences, it can be used for the preparation of the commonly used aqueous or alcoholic Erythrosin B staining solutions. As the dye belongs to the portfolio of Certistain® dyes, it is chemically analyzed according to strict specifications before release (CE marked and IVD product) and a high staining quality, with reliable staining results is guaranteed.

Product Information
CAS number	16423-68-0
EC number	240-474-8
Hill Formula	C₂₀H₆I₄Na₂O₅
Molar Mass	879.84 g/mol
HS Code	3204 12 00
Structure formula Image

Applications
Application	Erythrosine B (C.I. 45430) for microscopy Certistain®. CAS 16423-68-0, pH 6 - 7 (10 g/l, H₂O, 20 °C).

Physicochemical Information
pH value	6 - 7 (10 g/l, H₂O, 20 °C)
Bulk density	470 kg/m3
Solubility	100 g/l

Toxicological Information
LD 50 oral	LD50 Rat 1840 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H302: Harmful if swallowed.
RTECS	LM5950000
Storage class	10 - 13 Other liquids and solids
WGK	WGK 2 water endangering
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Safety Information
Hazard Symbols	Harmful
Categories of danger	harmful
R Phrase	R 22 Harmful if swallowed.

Storage and Shipping Information
Storage	Store at +5°C to +30°C.

Specifications
Dye content (gravimetrically)	≥ 80 %
Identity - sodium	passes test
- UV/VIS-Spectrum	passes test
Absorption maximum λ max (water)	524 - 527 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; water)	930 - 1170
TLC-Test	passes test
Loss on drying (110 °C)	≤ 10 %
Suitability for microscopy	passes test

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MERCK 115936 Erythrosine B (C.I. 45430) for microscopy Certistain. CAS 16423-68-0, pH 6 - 7 (10 g/l, H₂O, 20 °C)

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