Fast red AL salt
Fast Red AL Salt (CAS: 16048-40-1) is a chemical compound with the empirical formula C28H14Cl2N4O4 · ZnCl2 and a molecular weight of 677.64. As an azoic diazo component, it is primarily recognised for its role in dyeing and as a stain in biological and histological applications. This compound, featuring a Colour Index Number of 37275, is supplied by Tech Serve Solutions for various laboratory and industrial processes requiring precise coloration.
- IUPAC
- Azoic Diazo No. 36

Histological Staining
Fast Red AL Salt is employed as a component in staining procedures within histology. It aids in the differential coloration of cellular structures, facilitating microscopic examination and diagnosis.
Dyeing Processes
As an azoic diazo component, this salt is integral to the synthesis of specific dyes. It is used in industrial dyeing applications to impart vibrant red hues to various materials.
Cell Biology Research
The compound finds utility in cell biology for specific staining techniques. It assists researchers in visualising cellular components and understanding biological processes.
| Molecular weight | 677.64 |
|---|---|
| Empirical formula | C28H14Cl2N4O4 · ZnCl2 |


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.
| Colour Index Number | 37275 |
|---|---|
| Absorption | λmax 247 nm |
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 AL Salt used for?
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Fast Red AL Salt is primarily used in histological and cell biology staining techniques, and as an azoic diazo component in dyeing processes.
What is the CAS number and formula for Fast Red AL Salt?
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The CAS number is 16048-40-1 and the empirical formula is C28H14Cl2N4O4 · ZnCl2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Fast Red AL Salt with a molecular weight of 677.64. We do not specify pharmacopoeia grades unless explicitly stated in the product data; this product is typically for laboratory and research use.
What are the main safety concerns when handling Fast Red AL Salt?
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Fast Red AL Salt carries a Warning signal word and is classified 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), eyeshields, and gloves, is recommended. Refer to the Safety Data Sheet for full details.
Is Fast Red AL Salt a controlled substance?
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The provided data does not indicate that Fast Red AL Salt is a controlled substance.
How is Fast Red AL Salt shipped and exported?
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Tech Serve Solutions, established in 1998, is a specialist global supplier and exporter of fine chemicals, including Fast Red AL Salt. Specific shipping and export details can be provided upon inquiry.
How can I request a sample or quote for Fast Red AL Salt?
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To request a sample or obtain a quote for Fast Red AL Salt, please contact Tech Serve Solutions directly through our established communication channels.
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