Molekula
Crystal violet (C.I. 42555)
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
Crystal violet (C.I. 42555) is a synthetic triarylmethane dye with strong antimicrobial properties, widely used as a biological stain in microbiology, a disinfectant, and in various industrial applications like textile dyeing and pH indicators. It appears as a dark green crystalline powder that dissolves in water to form a violet solution. Catalogue details: CAS 548-62-9, molecular formula C25H30ClN3, molecular weight 407.98 g/mol, and requires ambient storage. The product carries a **Danger** signal word due to its toxicity. Molekula supplies Crystal violet 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.
Often bought together
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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25 g — $53.10 per pack
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50 g — $91.20 per pack
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250 g — $361.00 per pack
Need a different quantity or pack?
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 | Greenish bronze crystals or powder, odourless or almost odourless |
| Heavy metals | ≤20 ppm |
| Loss on Drying | ≤9.0% |
| Solubility | Passes test |
| Sulphated Ash | ≤3.0% |
| Arsenic (As) | ≤4 ppm |
| Zinc (Zn) | Passes turbidity test |
| Assay (Dye Content) | ≥96.0% |
| Identification (A,B,C) | To Pass test |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Green powder |
| Melting Point | 215 °C (decomposes) |
| Solubility (other solvents) | Very soluble in water, chloroform |
| log P (octanol/water) | 0.51 |
Source: PubChem CID 11057 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90004982 |
| CAS Number | 548-62-9 |
| IUPAC Name | [4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride |
| EC Number | 208-953-6 |
| Molecular Formula | C25H30ClN3 |
| Molecular Weight | 407.98 |
| Exact Mass | 407.2128 |
| SMILES | CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.[Cl-] |
| InChIKey | ZXJXZNDDNMQXFV-UHFFFAOYSA-M |
| InChI | InChI=1S/C25H30N3.ClH/c1-26(2)22-13-7-19(8-14-22)25(20-9-15-23(16-10-20)27(3)4)21-11-17-24(18-12-21)28(5)6;/h7-18H,1-6H3;1H/q+1;/p-1 |
| PubChem CID | 11057 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 32129000 |
| Tariff Code | 3212900000 |
Safety & GHS
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Corrosive
GHS05
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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
- H318 Causes serious eye damage
- H350 May cause cancer
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- 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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Romanian, 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
- Adergon
- Aniline Violet
- Crystal violet
- gentian violet
- Gentiaverm
- Hexamethyl Violet
- Methyl Violet 10B
- Methylrosaniline chloride
- methylrosanilinium chloride
- Pyoktanin
Frequently asked questions
What is crystal violet (C.I. 42555) commonly used for?
Crystal violet is primarily used as a biological stain (e.g., Gram staining), a dye in microscopy, and an antimicrobial agent in some applications.
What is the chemical formula and molecular weight of crystal violet?
The chemical formula is **C₂₅H₃₀ClN₃**, and the molecular weight is **407.98 g/mol**.
How should crystal violet be stored?
Store crystal violet at **ambient temperature** in a tightly sealed container, away from direct sunlight and moisture.
What grades of crystal violet does Molekula supply?
Molekula supplies **analytical and reagent-grade** crystal violet, meeting standard purity requirements for laboratory applications.
Can Molekula supply crystal violet in bulk quantities?
Yes, Molekula can provide crystal violet in bulk, with quantities tailored to your specific needs—please contact us for pricing and availability.
What documentation comes with a crystal violet order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.