Butan-1-ol
C4H10O
butan-1-ol
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Identification
- CAS Number
- 71-36-3
- EC Number
- 200-751-6
- UN Number
- 1120
- Index Number
- 603-004-00-6
- PubChem CID
- 263
Physical-chemical properties
- Molecular Formula
- C4H10O
- Molar Mass
- 74.12 g/mol
- IUPAC Name
- butan-1-ol
Chemical Identifiers
- InChI
- InChI=1S/C4H10O/c1-2-3-4-5/h5H,2-4H2,1H3
- InChI Key
- LRHPLDYGYMQRHN-UHFFFAOYSA-N
Overview
Butan-1-ol (CAS 71-36-3) is a primary alcohol with four carbon atoms featuring excellent solvent properties and industrial versatility. This straight-chain primary alcohol, also known as n-butanol, represents one of the most important industrial solvents in the chemical industry. With its molecular formula C4H10O and molar mass of 74.12 g/mol, butan-1-ol exhibits the characteristic properties of primary alcohols while offering unique advantages in various technical applications. The compound appears as a colorless liquid with a characteristic alcoholic odor and demonstrates moderate water solubility, making it valuable as both a polar and semi-polar solvent. The safety profile of butan-1-ol requires careful attention, as indicated by its GHS classification including flammable liquid category 3, acute toxicity category 4, and eye damage category 1. The substance carries the danger signal word and displays pictograms GHS02, GHS07, and GHS05, reflecting its flammable nature and potential health hazards. Proper handling procedures must include adequate ventilation, eye protection, and fire prevention measures, with ADR class 3 transportation requirements. Industrial applications of butan-1-ol span multiple sectors, primarily as a solvent in coatings, adhesives, and cleaning formulations where its moderate evaporation rate and excellent solvency power prove advantageous. The chemical industry also utilizes it as an intermediate in the synthesis of butyl esters and other derivatives. In contrast to related compounds like N',N'-diethylpropane-1,3-diamine, which serves specialized amine chemistry applications, butan-1-ol's alcohol functionality provides broader solvent compatibility across diverse industrial processes. OYSI supplies high-quality butan-1-ol to meet European industrial requirements, ensuring consistent specification compliance for demanding technical applications.
Safety & Classification
Flam. Liq. 3; Acute Tox. 4 *; STOT SE 3; STOT SE 3; Skin Irrit. 2; Eye Dam. 1
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
Skin Contact
Measures if substance contacts the skin
First Aid Actions
- +P302IF ON SKIN:
- +P352Wash with plenty of water.
- +P361Take off immediately all contaminated clothing.
- +P313Get medical advice/attention.
Related hazard statements:
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
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 | 1120 |
| ADR Class | 3 |
| Packing Group | III |
| Tunnel Code | D/E |
| Proper Shipping Name | n-Butanol |
| Marine Pollutant | No |
Frequently Asked Questions
What is butan-1-ol?
Butan-1-ol is a primary alcohol with the molecular formula C4H10O and CAS number 71-36-3. It is a four-carbon straight-chain alcohol also known as n-butanol or 1-butanol. With a molecular weight of 74.12 g/mol, it appears as a colorless liquid with a characteristic alcoholic odor. This compound is classified as a flammable liquid and poses health hazards including acute toxicity, skin irritation, and eye damage, requiring careful handling in industrial applications.
What are the physicochemical properties of butan-1-ol?
Butan-1-ol is a colorless liquid at room temperature with a characteristic mild, sweet alcoholic odor. It has moderate solubility in water due to its hydroxyl group, while being miscible with most organic solvents. The compound has a boiling point around 117°C and a flash point of approximately 35°C, making it a flammable liquid. Its density is lower than water, and it exhibits typical primary alcohol chemical reactivity including oxidation and esterification reactions.
What is butan-1-ol used for?
Butan-1-ol is primarily used as a solvent in paints, coatings, and varnishes due to its excellent dissolving properties for resins and polymers. It serves as an intermediate in chemical synthesis for producing esters, ethers, and other organic compounds. The substance is also utilized in the manufacture of plasticizers, particularly butyl phthalates, and in the production of butyl acetate. Additionally, it finds applications in cleaning products, extraction processes, and as a component in hydraulic fluids and brake fluids.
How to handle butan-1-ol safely?
Butan-1-ol requires careful handling due to its flammable nature and health hazards. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Ensure adequate ventilation to avoid inhalation of vapors, which can cause respiratory irritation. Keep away from ignition sources, heat, and open flames. Use explosion-proof electrical equipment in work areas. Always handle in well-ventilated areas or under fume hoods to minimize exposure risks.
How to store butan-1-ol correctly?
Butan-1-ol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and ignition points. Storage temperatures should remain below 25°C to minimize vapor formation. Keep containers away from oxidizing agents and strong acids which are incompatible materials. Storage areas must be equipped with appropriate fire suppression systems and spill containment measures. Containers should be properly grounded and bonded during transfer operations to prevent static electricity buildup and potential ignition.
What to do in case of contact with butan-1-ol?
Butan-1-ol exposure requires immediate action depending on the contact route. For skin contact, immediately remove contaminated clothing and flush the affected area with plenty of water for at least 15 minutes. In case of eye contact, rinse immediately with water for at least 15 minutes and seek medical attention due to potential eye damage. If inhaled, move the person to fresh air and seek medical attention if breathing difficulties occur. For ingestion, do not induce vomiting and seek immediate medical attention.
How to dispose of butan-1-ol appropriately?
Butan-1-ol disposal must comply with local and European waste regulations as it is classified as hazardous waste. The substance should never be poured down drains or disposed of with regular waste due to its flammable and toxic properties. Contact licensed waste disposal companies for proper treatment, which may include incineration at authorized facilities or recovery for recycling. Small quantities can potentially be neutralized through controlled evaporation in well-ventilated areas, but professional disposal is recommended for larger amounts.
How to transport butan-1-ol?
Butan-1-ol is classified under ADR transport regulations as Class 3 (flammable liquids), Packing Group III, indicating moderate danger during transport. Containers must be properly labeled with appropriate hazard placards and transported in compliance with dangerous goods regulations. Vehicles must be equipped with appropriate safety equipment and drivers must hold valid dangerous goods transport certification. The substance should be secured to prevent movement during transport and emergency response information must be readily available throughout the journey.
Is butan-1-ol subject to specific regulations?
Butan-1-ol is subject to various European regulations including REACH registration requirements for manufacturers and importers. Under the CLP regulation, it must be classified and labeled with danger pictogrammes GHS02, GHS05, and GHS07, along with the signal word 'Danger'. The substance is not currently listed as a Substance of Very High Concern (SVHC) under REACH. Workplace exposure limits may apply under occupational health regulations, and its use in consumer products may be restricted depending on concentration and application.
Where to buy butan-1-ol in Europe?
Butan-1-ol is available through OYSI, a reliable European distributor of technical chemicals serving industrial customers across the continent. OYSI provides high-quality butan-1-ol with proper documentation including safety data sheets and certificates of analysis. As a specialized chemical distributor, OYSI ensures compliance with European regulations and offers technical support for industrial applications. Contact OYSI directly for current availability, packaging options, and delivery arrangements to meet your specific butan-1-ol requirements in Europe.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.