Indicators & stains

CHROMOTROPE 2R For Microscopical Staining

C.I.No.16570 Used as a stain for cytology. 2-(Phenylazo)chromotropic acid disodium salt, Acid Red 29

Article code: 02830
CAS: 4197-07-3
Grade: For Microscopical Staining
Purity: 85%
Category: Indicators & stains

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Properties

Article No.: 02830
Grade: For Microscopical Staining
Purity: 85%
CAS No.: 4197-07-3
Molecular Formula: C16H10N2Na2O8S2
Molecular Weight: 468.4
H.S. Code: 3204.9000
Shelf Life: 60 Months

Product information

Article No.	02830	Grade	For Microscopical Staining
Purity	85%	CAS No.	4197-07-3
Molecular Formula	C16H10N2Na2O8S2	Molecular Weight	468.4
H.S. Code	3204.9000	Shelf Life	60 Months

Physical Properties

Physical state at 20 °C	Solid	Colour	Brownish red
Solubility in water [% weight]	Soluble in water

Specifications

Appearance	Brownish red powder	Dye content	Min 85%
Absorption maxima (in methanol)	508.0 to 512.0 nm

Packaging options

10 g (00010)
25 g (00025)

Details

CHROMOTROPE 2R For Microscopical Staining C.I.No.16570 Used as a stain for cytology. 2-(Phenylazo)chromotropic acid disodium salt, Acid Red 29 MSDS DE EN FR KO PT ES TH TR COAs Packings 10 g (00010) 25 g (00025) Print friendly version Article No. 02830 Grade For Microscopical Staining Purity 85% CAS No. 4197-07-3 Molecular Formula C 1 6 H 1 0 N 2 Na 2 O 8 S 2 Molecular Weight 468.4 H.S. Code 3204.9000 Shelf Life 60 Months Physical Properties Physical state at 20 °C Solid Colour Brownish red Solubility in water [% weight] Soluble in water Specifications Appearance Brownish red powder Dye content Min 85% Absorption maxima (in methanol) 508.0 to 512.0 nm Safety Information and Hazard Symbols Symbol: GHS07 Signal Word: Warning Hazardous Statement: H315-H319-H335 Precaution Statement: P261-P305 + P351 + P338 Revision Date: 18-May-2026 Home Lab Chemicals Biological Stains and Dyes CHROMOTROPE 2R