(3-Bromopropyl)triethylammonium bromide
(3-Bromopropyl)triethylammonium bromide (CAS: 3720-84-1), a quaternary ammonium salt with the formula Br(CH2)3N(C2H5)3Br, has a molecular weight of 303.08. This compound is primarily recognised for its utility in biological staining and as a reagent in cell biology and hematology. Supplied by Tech Serve Solutions with an assay of approximately 80%, it serves as a valuable tool for researchers and laboratories requiring specific histological and cytological applications.

Biological Staining
(3-Bromopropyl)triethylammonium bromide is employed as a reagent in various staining procedures within histology and cell biology. It aids in differentiating cellular structures and tissues, contributing to clearer microscopic analysis.
Cell Biology Research
This compound is utilised in cell biology research for applications that may involve cellular imaging or specific biochemical assays. Its quaternary ammonium structure can interact with biological membranes or macromolecules.
Hematology and Histology
Within hematology and histology, (3-Bromopropyl)triethylammonium bromide functions as a component in specialised staining protocols. It supports the visual identification and classification of blood cells and tissue components.
| Molecular weight | 303.08 |
|---|---|
| Linear formula | Br(CH2)3N(C2H5)3Br |
| Assay | ~80% |
| Melting point | 137-139 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 (3-Bromopropyl)triethylammonium bromide used for?
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(3-Bromopropyl)triethylammonium bromide is used in biological staining, cell biology research, and in hematology and histology applications for differentiating cellular structures and tissues.
What are the CAS number and formula for (3-Bromopropyl)triethylammonium bromide?
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The CAS number is 3720-84-1 and the linear formula is Br(CH2)3N(C2H5)3Br.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (3-Bromopropyl)triethylammonium bromide with an assay of approximately 80%. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should (3-Bromopropyl)triethylammonium bromide be handled safely?
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Handle with appropriate personal protective equipment, including Eyeshields, Gloves, and a dust mask type N95 (US). Avoid breathing dust. Ensure adequate ventilation. This compound may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335).
Is (3-Bromopropyl)triethylammonium bromide a controlled substance?
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Based on the provided data, (3-Bromopropyl)triethylammonium bromide is not indicated as a controlled substance. However, customers should always verify local regulations.
How is (3-Bromopropyl)triethylammonium bromide shipped or exported?
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Tech Serve Solutions, as a global supplier, exports chemicals worldwide. Specific shipping and handling procedures comply with international regulations for chemical transport.
How can I request a quote or sample for this chemical?
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To request a quote or sample for (3-Bromopropyl)triethylammonium bromide, please contact our sales team through the Tech Serve Solutions website or via direct inquiry.
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