Butyl nitrite
C4H9NO2
butyl nitrite
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Identification
- CAS Number
- 544-16-1
- EC Number
- 208-862-1
- UN Number
- 2351
- Index Number
- 007-016-00-7
- PubChem CID
- 10996
Physical-chemical properties
- Molecular Formula
- C4H9NO2
- Molar Mass
- 103.12 g/mol
- IUPAC Name
- butyl nitrite
Chemical Identifiers
- InChI
- InChI=1S/C4H9NO2/c1-2-3-4-7-5-6/h2-4H2,1H3
- InChI Key
- JQJPBYFTQAANLE-UHFFFAOYSA-N
Overview
Butyl nitrite (CAS 544-16-1) is an organic nitrite ester with volatile properties and flammable characteristics used in various industrial applications. Butyl nitrite represents a significant compound in the nitrite ester family, characterized by its molecular formula C4H9NO2 and molecular weight of 103.12 g/mol. This chemical substance exhibits notable volatility and flammability properties, requiring careful handling protocols in industrial environments. The compound is classified under multiple hazard categories including flammable liquid category 2 and acute toxicity category 3, reflecting its potential risks during storage, transport, and use. The substance displays typical characteristics of organic nitrites, sharing certain chemical behaviors with related compounds such as prop-2-enenitrile in terms of handling requirements, though each maintains distinct properties and applications. Butyl nitrite's physical and chemical properties make it particularly suitable for specific industrial processes where controlled reactivity is essential. Safety considerations are paramount when working with butyl nitrite, as indicated by its GHS02 and GHS06 pictograms signaling both fire hazard and acute toxicity risks. The substance requires ADR class 3 transportation protocols, emphasizing the importance of proper logistics and storage infrastructure. Professional handling procedures must account for its flammable nature and potential health impacts through appropriate ventilation systems and personal protective equipment. Primary industrial applications include its use as a chemical intermediate in organic synthesis processes, as a component in certain analytical procedures, and in specialized manufacturing applications where nitrite functionality is required. The compound also finds application in research and development activities within pharmaceutical and chemical industries. OYSI maintains reliable supply chains for butyl nitrite, ensuring consistent availability for European industrial customers requiring this specialized chemical intermediate.
Safety & Classification
Flam. Liq. 2; Acute Tox. 3 *; Acute Tox. 3 *
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Inhalation
Measures if vapours or dust are inhaled
First Aid Actions
- +P304IF INHALED:
- +P340Remove person to fresh air and keep comfortable for breathing.
- +P311Call a POISON CENTER/doctor.
Related hazard statements:
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 2351 |
| ADR Class | 3 |
| Packing Group | II |
| Tunnel Code | D/E |
| Proper Shipping Name | Butylnitrit |
| Marine Pollutant | No |
Frequently Asked Questions
What is butyl nitrite?
Butyl nitrite is an organic chemical compound with the molecular formula C4H9NO2 and CAS number 544-16-1. It belongs to the alkyl nitrite family and has a molecular weight of 103.12 g/mol. This substance is classified as a flammable liquid and acute toxicant, requiring careful handling due to its hazardous properties. It appears as a volatile liquid and is commonly used in various industrial applications.
What are the physicochemical properties of butyl nitrite?
Butyl nitrite is a volatile, flammable liquid at room temperature with characteristic properties typical of alkyl nitrites. It has a molecular weight of 103.12 g/mol and exhibits high volatility due to its chemical structure. The compound is sensitive to light and heat, which can cause decomposition. Its flammable nature requires storage away from ignition sources and oxidizing agents.
What is butyl nitrite used for?
Butyl nitrite is primarily used as a chemical intermediate in organic synthesis and industrial processes. It serves as a reagent in diazotization reactions and can be employed in the production of other organic compounds. The substance finds applications in pharmaceutical intermediates synthesis and specialized chemical manufacturing processes where alkyl nitrites are required as reactive components.
How to handle butyl nitrite safely?
Butyl nitrite requires careful handling due to its Acute Tox. 3 and Flam. Liq. 2 classifications. Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work in well-ventilated areas or under fume hoods to prevent inhalation. Keep away from heat sources, sparks, and open flames. Use explosion-proof electrical equipment and avoid generating static electricity during handling.
How to store butyl nitrite correctly?
Butyl nitrite must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Use tightly sealed containers to prevent evaporation and contamination. Keep away from incompatible materials such as strong oxidizers, acids, and bases. Storage areas should be equipped with appropriate fire suppression systems due to its flammable nature. Maintain temperatures below recommended limits to prevent decomposition.
What to do in case of contact with butyl nitrite?
Butyl nitrite exposure requires immediate first aid measures due to its acute toxicity. In case of skin contact, remove contaminated clothing and wash thoroughly with soap and water. For eye contact, rinse immediately with plenty of clean water for at least 15 minutes. If inhaled, move to fresh air immediately. If ingested, do not induce vomiting and seek medical attention promptly. Always consult a physician after any significant exposure.
How to dispose of butyl nitrite appropriately?
Butyl nitrite disposal must comply with local and international hazardous waste regulations due to its toxic and flammable properties. Do not discharge into drains, water bodies, or soil. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may require neutralization or incineration at authorized facilities. Maintain disposal records and follow all applicable environmental protection guidelines for hazardous chemical waste management.
How to transport butyl nitrite?
Butyl nitrite is classified under ADR Class 3 (flammable liquids), Packing Group II, requiring specific transport regulations. Use UN-approved packaging and proper hazard labels including GHS02 and GHS06 pictograms. Transport documents must include the correct shipping name and hazard classifications. Vehicles must be equipped with appropriate safety equipment and drivers require hazardous materials training. Follow all international dangerous goods transport regulations.
Is butyl nitrite subject to specific regulations?
Butyl nitrite is subject to various chemical safety regulations including REACH registration requirements in Europe and CLP classification obligations. It carries hazard classifications as Flam. Liq. 2 and Acute Tox. 3, requiring appropriate safety data sheets and hazard communication. The substance is not currently listed as a SVHC (Substance of Very High Concern) but must comply with occupational exposure limits and industrial safety standards.
Where to buy butyl nitrite in Europe?
Butyl nitrite is available through specialized chemical distributors in Europe, including OYSI, which supplies high-quality chemical products to industrial customers. When purchasing, ensure the supplier provides proper documentation including safety data sheets, certificates of analysis, and regulatory compliance information. Choose suppliers with established logistics networks for hazardous materials and appropriate technical support for safe handling and application guidance.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.