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Methyl green (C. I. 42590), 5 g

for microscopy
Examples of effect: Damage metals and burn body tissues; may cause serious eye damage. Safety: Avoid contact; wear safety spectacles and gloves. In the event of contact with eyes and skin, rinse with water.
Examples of effect: Have an allergenic effect, carcinogenic, mutagenic, toxic to reproduction and cause developmental toxicity (reprotoxic) or damage to organs Safety: You must be well-informed before starting work with these substances; wear protective clothing and gloves, eye protection and mask or breathing protection.
Examples of effect: Are harmful to aquatic organisms, toxic or highly toxic, acute or with long-term effects. Safety: To be disposed of as hazardous waste only, do not allow into the environment under any circumstances.
i causes severe skin burns and eye damage, suspected of causing cancer (if exposed), toxic to aquatic life with long lasting effects
P273 P280 P302+P352 P305+P351+P338 P310
i avoid release to the environment, wear protective gloves/eye protection, IF ON SKIN: Wash with plenty of water, IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing, immediately call a POISON CENTER/doctor
Pack Qty.
Ethyl green zinc chloride double salt, Methyl green zinc chloride double salt
Empirical formula C27H35Cl2N3 · ZnCl2
Molar mass (M) 608,78 g/mol
Melting point (mp) >300 °C
CAS No. 7114-03-6
EG-Nr. 230-415-4
UN-Nr. 1759

Indicator pH 0.1-2.3
Dissolve 0.1 g in 100 ml of water

Acid nitroso dye, staining reagent for visualising nuclei, water soluble (1 %).
Product details

€28.50/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 5159.1

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Product details

Methyl green (C. I. 42590) for microscopy

Acid nitroso dye, staining reagent for visualising nuclei, water soluble (1 %).

Technical Information
Colour conversion yellow - green blue 
Transition range pH 0,1 - 2,3 
Methyl green (C. I. 42590)
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Art. No. Pack Qty. Pack. Price Quantity
5159.1 5 g glass


5159.2 10 g glass


5159.3 25 g glass


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Downloads / MSDS

General information

Indicators and Dyes

Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.

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The following analysis certificates have been found:

Type analysis

Appearancedark red to dark green powder
Absorption max. (in H2O)625-635 nm