Molekula
Leucomalachite Green
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Leucomalachite Green is a colorless, reduced form of malachite green dye, primarily used as a chemical intermediate and in analytical chemistry for redox titrations, dye synthesis, and as a precursor in organic reactions. It also serves as a reagent for colorimetric detection of hemoglobin and other heme compounds, a textile dye for silk, wool, leather and cotton, and a biological stain. It appears as a pale yellow to white crystalline solid with high solubility in organic solvents. Leucomalachite Green has a CAS number of 129-73-7, molecular formula C23H26N2, and a molecular weight of 330.47 g/mol. It must be stored at ambient conditions and handled with caution, as it carries a **Danger** signal word due to its potential hazards. Molekula supplies Leucomalachite Green from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £62.10 per pack ex VAT · £74.52 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or light blue solid |
| Assay/Purity | ≥97% |
| Structure | Conforms (1HRNMR) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Off-white to light-brown powder |
| Melting Point | 102 °C |
| Solubility (other solvents) | Very soluble in benzene, ethyl ether |
Source: PubChem CID 67215 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90027147 |
| CAS Number | 129-73-7 |
| IUPAC Name | 4-[[4-(dimethylamino)phenyl]-phenylmethyl]-N,N-dimethylaniline |
| EC Number | 204-961-9 |
| Molecular Formula | C23H26N2 |
| Molecular Weight | 330.47 |
| Exact Mass | 330.2096 |
| SMILES | CN(C)C1=CC=C(C=C1)C(C2=CC=CC=C2)C3=CC=C(C=C3)N(C)C |
| InChIKey | WZKXBGJNNCGHIC-UHFFFAOYSA-N |
| InChI | InChI=1S/C23H26N2/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4/h5-17,23H,1-4H3 |
| PubChem CID | 67215 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 29215980 |
| Tariff Code | 2921599090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H341 Suspected of causing genetic defects
- H351 Suspected of causing cancer
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P264 Wash thoroughly after handling
- P270 Do not eat, drink or smoke when using this product
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 4,4'-Benzylidene bis(N,N-dimethylaniline)
- 4,4'-Bis(dimethylamino)triphenylmethane
- Aniline, 4,4'-benzylidenebis(N,N-dimethyl-
- Bis(p-(N,N-dimethylamino)phenyl)phenylmethane
- Bis(p-dimethylaminophenyl)phenylmethane
- C.I. Basic Green 4, leuco base
- Malachite green leuco
- Malachite green leuco base
- p,p'-Benzylidenebis(N,N-dimethylaniline)
- Tetramethyldiaminotriphenylmethane
Frequently asked questions
What is Leucomalachite Green commonly used for?
Leucomalachite Green is primarily used as a dye precursor in the production of Malachite Green, a triarylmethane dye with applications in microscopy, aquaculture, and textile dyeing.
What is the chemical formula and molecular weight of Leucomalachite Green?
The chemical formula is **C₂₃H₂₆N₂** and the molecular weight is **330.47 g/mol**.
How should Leucomalachite Green be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What grade of Leucomalachite Green does Molekula supply?
Molekula supplies **analytical/technical grade** Leucomalachite Green, suitable for research, industrial dye synthesis, and other applications requiring high purity.
Can Molekula supply Leucomalachite Green in bulk quantities?
Yes, Molekula can provide bulk quantities of Leucomalachite Green upon request, with flexible packaging options to meet your production needs.
What documentation comes with an order of Leucomalachite Green?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity, identity, and safety information.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.