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Date of Issue : Feb 2000 1. IDENTIFICATION
General Product Name : CYCLOHEXANE Other Names : HEXAMETHYLENE ; HEXANAPHTHENE ; HEXAHYDROBENZENE UN No. : 1145 Dangerous Goods Class : 3 Subsidiary Risk : None Allocated Hazchem Code : 3[Y]E Pack Group : II EPG : 14 Poisons Schedule : 5 Uses : Manufacture of nylon; solvent for cellulose ethers, fats, oils, waxes, bitumens, resins, crude rubber; extracting essential oils; chemicals (organic synthesis, recrystallising medium); paint and varnish remover; glass substitutes; solid fuels; fungicides; analytical chemistry.
1.1 Physical Description / Properties
Appearance : Clear, colourless liquid, with characteristic odor. Faint ether-like odor. Formula : C6H12 Boiling Point : 81 deg C Melting Point : 7 deg C Vapour Pressure : 95 mm Hg (1 atmosphere) Specific Gravity : 0.78 (water = 1) Flash Point : Closed Cup -20 pH : N/A () Solubility in water : Insol g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : 0.3 Upper Explosion Limit : 8.0 1.2 Other Properties
Vapour density (Air=1) : 3.0 Evaporation rate (BuAc=1) : 2.6 (Ether=1) Autoignition temperature : 260 deg C 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
May produce abdominal pain, nausea. Aspiration into lungs can produce severe lung damage and is a medical emergency. Other symptoms expected to parallel inhalation. Eye
Causes irritation, redness, and pain. Skin
Causes irritation to skin. Symptoms include redness, itching, and pain. Inhaled
Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. High concentrations have a narcotic effect. 2.2 Health Effects - Chronic
Chronic exposure may cause skin effects.
2.3 First Aid
Swallowed
Aspiration hazard. If swallowed, vomiting may occur spontaneously, but DO NOT induce. If vomiting occurs, keep head blow hips to prevent aspiration into lungs. Never give anything by mouth to an unconscious person. Call a physician.
Eye
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occassionally. Get medical attention immediately.
Skin
In case of contact, immediately flush skin with plenty of soap and water for at least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. Call a physician.
Inhaled
Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Call a physician.
First Aid Facilities
Ensure an eye bath & safety shower are available and ready for use.
2.5 Advice to Doctor
Treat symtomatically based on judgement of doctor and individual reactions of patient.
2.6 Toxicity Data
Oral LD50 : 12705 mg/kg - Investigated as a mutagen.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
Worksafe recommends a TWA of 300ppm (1030 mg/m3) for cyclohexane.
3.2 Engineering Controls
A system of local and/or general exhaust is recommended to keep employee exposures below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the emissions of the contaiminant and its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, industrail Ventilation, A Manual of Recommended Practices, most recent edition, for details.
3.3 Personal Protection
PERSONAL RESPIRATORS (NIOSH Approved): If the exposure limit is exceeded, a full facepiece respirator with organic vapor cartridge may be worn up to 50 times the exposure limit or the maximum concentration specified by the appropriate regulatory agency or respirator supplier, Whichever is lowest. For Emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING: Air purifying respirators do not protect workers in oxygen -deficient atmospheres. SKIN PROTECTION: Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropraite, to prevent skin contact. EYE PROTECTION: Use chemical safety goggles and/or a full face shield where splashing is possible. Maintain eye wash fountain and quick-drench facilities in work area.
3.4 Flammability
DANGER! EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY CAUSE FLASH FIRE. HARMFUL OR FATAL IF SWALLOWED. HARMFUL IF INHALED. AFFECTS CENTRAL NERVOUS SYSTEM. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Protect against physical damage. Store in a cool, dry well-ventilated location, away from any area where the fire hazard may be acute. Outside or detached storage is prefferred. Separate from incompatibles. Containers should be bonded and grounded for transfers to avoid static sparks. Storage and use should be NO SMOKING areas. Use non-sparking type tools and equipment, including explosion proof ventilatio. Containers of this material may be hazardous when empty since they retain product residues (vapors, liquid); observe all warnings and precautions listed for the product.
4.2 Packaging / Labelling UN No. 1145 Class 3 Sub Risk None Allocated Hazchem Code 3[Y]E Pack Group II EPG No. 14 Shipping Name CYCLOHEXANE Hazard
Risk Phrases R11 Highly flammable.
Safety Phrases S9 Keep container in a well ventilated place. S16 Keep away from sources of ignition. S29 Do not empty into drains. S33 Take precautionary measures against static discharges. S43:A In case of fire use sand, earth, chemical powder or foam.
4.3 Spills and Disposal
Spills
Clean-up personnel should wear full protective clothing including breathing apparatus.
Ventilate area of leak or spill. Remove all sources of ignition. Wear appropriate personal protective equipment. Isolate hazard area. Keep unnecessary and unprotected personnel from entering. Contain and recover liquid when possible. Use non-sparking tools and equipment. Collect liquid in an appropriate container or absorb with an inert material (e.g vermiculite, dry sand, earth), and place in a chemical waste container. Do not use combustible materials, such as saw dust. Do not flush to sewer! If a leak or spill has not ignited, use water spary to disperse the vapors, to protect personnel attempting to stop leak, and to flush spills away from exposures.
Disposal
Place waste in containers for disposal by incineration at an approved industrial facility in accordance with regulations.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Fire: Flash point : - 20C (-4F) CC Autoignition temperature : 245C (473F) Flammable limits in air % by volume : lel - 1.3; uel - 8.0 (Highly Flammable) EXPLOSION: Above flash point, vapor-air mixtures are explosive within flammable limits noted above. Vapors can flow along surfaces to distant ignition source and flash back. Sealed containers may repture when heated. Contact with strong oxidizers may cause fire. Sensitive to static discharge. STABILITY AND REACTIVITY: Stability : Stable at room temperature in a sealed containers. Hazardous Decomposition Products : Carbon dioxide and carbon monoxide may form when heated to decomposition.
Extinguishing Media
Fire-fighters should wear full protective clothing including self-contained breathing apparatus. In case of fire use dry chemical, foam or carbon dioxide. Water may be ineffective. Water spray may be used to keep fire exposed containers cool, dilute spills to nonflammable mixtures, protect personnel attempting to stop leak and disperse vapors. 5 OTHER INFORMATION
Other Information
When released into soil, this material may biodegrade to moderate extent. When released into soil, this material is expected to leach into groundwater. When released into the soil, this material is expected to quickly evaporate. When released to water, this material is expected to quickly evaporate. This material has a logoctanol-water partition coefficient of greater than 3.0. This material may bioaccumulate to some extent. When released into the air, this material is expected to be readily degraded by reaction with photochemically produced hydroxyl radicals. When released into the air. this material is expected to have a half-life between 1 and 10 days. Environment Toxicity : This material is expected to be slightly toxic to aquatic life. The LC50/96-hour values for fish are between 10 and 100mg/l.
5.1 Contact Points
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The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use.
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