Gram staining
The primary stain of the Gram procedure, used daily in microbiology laboratories to classify bacteria.
Powder
Speciality Dyes · Extra Pure
Gentian Violet
Also known as Crystal violet, Methyl violet 10B, Basic Violet 3 and Hexamethyl pararosaniline chloride
CAS548-62-9
FormulaC₂₅H₃₀ClN₃
MW407.98
PubChem11057
A triarylmethane dye with a deep violet colour, used for Gram staining, histology and inks.
Assay96.0–100.5%
GradeExtra Pure
MW407.98
ISO 9001:2015 certified supplier
Overview
About Gentian Violet
Gentian Violet, also sold as crystal violet, is a triarylmethane dye. The dry powder is dark green with a metallic lustre and dissolves to give an intense violet solution.
It is the primary stain in the Gram method, the most widely used staining procedure in microbiology, and is also used in histology, as a pH indicator and as a colourant for inks and paper.
IdentityC₂₅H₃₀ClN₃
- CAS number
- 548-62-9
- Molecular formula
- C₂₅H₃₀ClN₃
- Molecular weight
- 407.98
- PubChem CID
- 11057
- Appearance
- Green to dark green powder with a metallic lustre
- Grade
- Extra Pure
Technical specification
Specification, Extra Pure grade
Every batch is released against these limits. Ask for the specification sheet with your quote.
| # | Test | Specification |
|---|---|---|
| 01 | Description | Green to dark green powder with a metallic lustre |
| 02 | Solubility | Methanol-insoluble matter not more than 1.0% |
| 03 | Residue on ignition (ash) | Not more than 1.5% |
| 04 | Loss on drying | Not more than 7.5% |
| 05 | Arsenic | Not more than 0.001% |
| 06 | Lead | Not more than 0.003% |
| 07 | Assay | 96.0% to 100.5% |
Need a tighter limit or an extra test? Send us your specification with your enquiry.
Specification sheet (PDF)
Applications
Where Gentian Violet is used
Histology & indicators
A nuclear stain in histology and an acid–base indicator in non-aqueous titrations.
Inks & colourants
Colours printing inks, ball-pen inks, paper and other industrial products.
Packing
Packed to your order
We pack Gentian Violet in sealed containers suited to the product, from laboratory bottles to bulk packs. Every container carries the product name, batch number, dates and hazard labels. Tell us the pack size and quantity you need.
Storage & handling
Keep it dry, closed and out of the light
- Store in the original, tightly closed container in a cool, dry, well-ventilated place.
- Protect from direct light and moisture.
- Dyes stain skin, clothing and surfaces strongly. Wear gloves, eye protection and a dust mask when handling.
Read the MSDS for full hazard, first-aid and disposal information.
Documents
Specification and safety documents
Ask for any of these and we will email them with your quote.
Questions
Frequently asked
Is Gentian Violet the same as crystal violet?
Yes. Both names describe hexamethyl pararosaniline chloride, CAS 548-62-9. We supply it as Gentian Violet, Extra Pure.
Which pack sizes can I order?
Tell us the quantity you need. We will suggest the right pack, from laboratory bottles to bulk packs, with your quote.
Can you supply against our own specification?
Send your specification with your enquiry. Our team will confirm which limits we can meet before you order.
Do you ship outside India?
Yes. We hold an Import Export Code and supply both domestic and export buyers. Mention the destination country in your enquiry so we can quote the right packing and documents.
Related products
Other speciality dyes
Enquire
Get a quote for Gentian Violet
Tell us the quantity, pack size and destination. We will confirm price, availability and lead time, and send the documents you need.
Phone & WhatsApp+91 77530 58907
Emailankur.agrawal@spacorporation.in