Malachite Green Oxalate C.I. 42000

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Price: £13.13

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 10th September 2025*

In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)

4 to 6 weeks approx. (Not guaranteed)

UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Applications

Parasiticide
Blue-green counterstain
Biological Drye Dye
Stain Manufacture

General

Malachite Green Oxalate is often used as a counterstain in histological tissue sections and for staining bacterial polysaccharides and spores. Commonly used as a counter stain in the Ziehl-Neelsen procedure.

Specification

Colour Index: C.I. 42000
Molecular Formula: C₅₂H₅₄N₄O₁₂
Molecular Weight: 927.02
Wavelength of Maximum Absorption, λ Max (in 50:50 IMS:Water): 623nm
Absorption Ratio (A λ max-15nm/A λmax+15nm): 1.01
Specific Absorption (A 1% in 10nm Cell) AT, λmax: 1814
Maximum Loss on Drying at 105 deg C: 10%
Synonyms: Basic Green 4

Hazards

Hazard Class: 6.1

Packing Group: 3

Hazard Phrases: Toxic if swallowed. Causes serious eye damage. Very toxic to aquatic life with long lasting effects.

Prec Phrases: Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Dispose of contents/container to

aquatic CLP Image corrosive CLP Image respiratory CLP Image toxic CLP Image