Fast Red Violet LB Salt
Fast Red Violet LB Salt (CAS: 32348-81-5) is a diazonium salt with the linear formula C <sub>14</sub>H <sub>11</sub>Cl <sub>2</sub>N <sub>3</sub> · ½ZnCl <sub>2</sub> and a molecular weight of 376.31. This chemical is primarily utilised as a stain in biological and histological applications. It functions as a coupling agent in various staining procedures, facilitating the visualisation of cellular structures and tissues.
- IUPAC
- 5-Chloro-4-benzamido-2-methylbenzenediazonium chloride hemi(zinc chloride) salt
- Synonyms
- 5-Chloro-4-benzamido-2-methylbenzenediazonium chloride hemi(zinc chloride) salt

Histological Staining
Fast Red Violet LB Salt serves as a crucial diazonium component in staining techniques used for examining tissue morphology. Its ability to couple with other reagents aids in the differential staining of cellular components, enhancing microscopic visualisation.
Cell Biology Research
In cell biology, this compound is employed as a stain to identify and differentiate cellular structures. It is valuable for routine laboratory analysis and specific research applications requiring detailed cellular imaging.
Diagnostic Applications
The staining properties of Fast Red Violet LB Salt make it useful in certain diagnostic procedures within hematology and histology. Accurate visualisation of blood cells and tissue samples is critical for diagnostic accuracy.
| Molecular weight | 376.31 |
|---|---|
| Linear formula | C14H11Cl2N3O · ½ZnCl2 |
| Solubility | H2O: soluble1 mg/mL |
| Storage temperature | room temp |


Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H332Harmful if inhaled
- H351Suspected of causing cancer
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-40 |
| Safety statements (S) | 22-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Fast Red Violet LB Salt used for?
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Fast Red Violet LB Salt (CAS: 32348-81-5) is primarily used as a diazonium coupling agent in histological and hematological staining techniques for visualising cellular and tissue structures.
What are the CAS number and formula for Fast Red Violet LB Salt?
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The CAS number is 32348-81-5 and the linear formula is C <sub>14</sub>H <sub>11</sub>Cl <sub>2</sub>N <sub>3</sub> · ½ZnCl <sub>2</sub>.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Fast Red Violet LB Salt as a research or technical grade material. We do not represent it as meeting USP, BP, or EP pharmacopoeia standards.
What are the safety considerations for handling Fast Red Violet LB Salt?
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Fast Red Violet LB Salt is a Warning substance with hazards including H302 (Harmful if swallowed), H312 (Harmful in contact with skin), H332 (Harmful if inhaled), and H351 (Suspected of causing cancer). Appropriate personal protective equipment, including a dust mask (N95 US type), eyeshields, and gloves, must be used. Avoid dust formation and ensure adequate ventilation.
How is Fast Red Violet LB Salt packed, shipped, and exported?
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Fast Red Violet LB Salt is carefully packed to ensure stability during transit. We are experienced in shipping and exporting fine chemicals globally, adhering to all relevant international regulations.
How can I request a quote or sample of Fast Red Violet LB Salt?
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To request a quote or a sample of Fast Red Violet LB Salt, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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