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Safety Data Sheet EN

Cyclohexane

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Cyclohexane
Product Code
07504
Chemical Name
Cyclohexane
Synonyms
Benzene hexahydride; Hexahydrobenzene; Hexamethylene; CITGO® Material Code: 07504

Regulatory Identifiers

CAS Number
N/A

Manufacturers & Suppliers

C

CITGO Petroleum Corporation

manufacturer

P.O. Box 4689, Houston, TX 77210

Emergency Contacts

Technical Contact

(832) 486-4000

M-F - 8 AM to 4 PM CT

Medical Emergency

(832) 486-4700

24 Hr

CHEMTREC Emergency

(800) 424-9300

24 Hr

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Flam. Liq. Cat. 2
Skin Irrit. Cat. 2
STOT SE Cat. 3
Asp. Tox. Cat. 1
Aquatic Acute Cat. 1
Aquatic Chronic Cat. 1

GHS Pictograms

GHS02 - Flammable

GHS02

GHS07 - Health hazard

GHS07

GHS08 - Serious health hazard

GHS08

GHS09 - Environmental hazard

GHS09

Hazard Statements

H225 Highly flammable liquid and vapor.
H304 May be fatal if swallowed and enters airways.
H315 Causes skin irritation.
H336 May cause drowsiness or dizziness.
H410 Very toxic to aquatic life with long lasting effects.

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P241 Use explosion-proof electrical, ventilating, lighting and all material-handling equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P261 Avoid breathing vapor.
P264 Wash hands thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves.
P282 Wear eye or face protection.
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or physician.
P302 + P352 IF ON SKIN: Wash with plenty of soap and water.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
P304 + P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P312 Call a POISON CENTER or physician if you feel unwell.
P331 Do NOT induce vomiting.
P332 + P313 If skin irritation occurs: Get medical attention.
P362 + P364 Take off contaminated clothing and wash it before reuse.
P391 Collect spillage.
P403 + P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents and container in accordance with all local, regional, national and international regulations.

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance

Chemical name: Cyclohexane Other means of identification: Benzene hexahydride; Hexahydrobenzene; Hexamethylene; CITGO® Material Code: 07504 CAS number: 110-82-7

Chemical Name CAS Number Concentration Hazardous
Cyclohexane 110-82-7 99% No
Hexanes, other isomers --- 0.5% No

There are no additional ingredients present which, within the current knowledge of the supplier and in the concentrations applicable, are classified as hazardous to health or the environment and hence require reporting in this section.

Notes

Any concentration shown as a range is to protect confidentiality or is due to process variation.

04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Remove victim to fresh air and keep at rest in a position comfortable for breathing. If it is suspected that fumes are still present, the rescuer should wear an appropriate mask or self-contained breathing apparatus. If not breathing, if breathing is irregular or if respiratory arrest occurs, provide artificial respiration or oxygen by trained personnel. It may be dangerous to the person providing aid to give mouth-to-mouth resuscitation. Get medical attention. If unconscious, place in recovery position and get medical attention immediately. Maintain an open airway. Loosen tight clothing such as a collar, tie, belt or waistband.

Symptoms: Can cause central nervous system (CNS) depression. May cause drowsiness or dizziness. Repeated or prolonged overexposure to solvents can cause brain or other nervous system damage. The symptoms can include the loss of memory, the loss of intellectual capacity and the loss of coordination. Adverse symptoms may include the following: nausea or vomiting, headache, drowsiness/fatigue, dizziness/vertigo, unconsciousness.

Skin contact

Wash skin thoroughly with soap and water or use recognized skin cleanser. Remove contaminated clothing and shoes. Continue to rinse for at least 10 minutes. Get medical attention. Wash clothing before reuse. Clean shoes thoroughly before reuse.

Symptoms: Causes skin irritation. Defatting to the skin. Adverse symptoms may include the following: irritation, redness, dryness, cracking.

Eye contact

Immediately flush eyes with plenty of water, occasionally lifting the upper and lower eyelids. Check for and remove any contact lenses. Continue to rinse for at least 10 minutes. Get medical attention.

Symptoms: Adverse symptoms may include the following: pain or irritation, watering, redness.

Ingestion

Get medical attention immediately. Call a poison center or physician. Wash out mouth with water. Remove dentures if any. Remove victim to fresh air and keep at rest in a position comfortable for breathing. Aspiration hazard if swallowed. Can enter lungs and cause damage. Do not induce vomiting. If vomiting occurs, the head should be kept low so that vomit does not enter the lungs. Never give anything by mouth to an unconscious person. If unconscious, place in recovery position and get medical attention immediately. Maintain an open airway. Loosen tight clothing such as a collar, tie, belt or waistband.

Symptoms: Can cause central nervous system (CNS) depression. May be fatal if swallowed and enters airways. Adverse symptoms may include the following: nausea or vomiting.

Immediate Medical Attention

Get medical attention immediately. If ingested, this material presents a significant aspiration and chemical pneumonitis hazard.

Medical Treatment

Treat symptomatically and supportively. Consider activated charcoal and/or gastric lavage. If patient is obtunded, protect the airway by cuffed endotracheal intubation or by placement of the body in a Trendelenburg and left lateral decubitus position.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Use caution when applying carbon dioxide in confined spaces. SMALL FIRE: Steam, CO₂, dry chemical or inert gas (e.g., nitrogen). LARGE FIRE: Use foam, water fog or water spray. Water fog and spray are effective in cooling containers and adjacent structures. However, water can cause frothing and/or may not extinguish the fire. Water can be used to cool the external walls of vessels to prevent excessive pressure, ignition or explosion.

Unsuitable media

Do not use water jet.

Specific hazards

Highly flammable liquid and vapor. Runoff to sewer may create fire or explosion hazard. This product is a poor conductor of electricity and can become electrostatically charged. If sufficient charge is accumulated, ignition of flammable mixtures can occur. To reduce potential for static discharge, use proper bonding and grounding procedures. This liquid may accumulate static electricity when filling properly grounded containers. Static accumulation may be significantly increased by the presence of small quantities of water or other contaminants. In a fire or if heated, a pressure increase will occur and the container may burst, with the risk of a subsequent explosion. The vapor/gas is heavier than air and will spread along the ground. Vapors may accumulate in low or confined areas or travel a considerable distance to a source of ignition and flash back. This material is very toxic to aquatic life with long lasting effects. Fire water contaminated with this material must be contained and prevented from being discharged to any waterway, sewer or drain.

Instructions

Promptly isolate the scene by removing all persons from the vicinity of the incident if there is a fire. No action shall be taken involving any personal risk or without suitable training. Move containers from fire area if this can be done without risk. Use water spray to keep fire-exposed containers cool.

Firefighter Protection

Fire-fighters should wear appropriate protective equipment and self-contained breathing apparatus (SCBA) with a full face-piece operated in positive pressure mode.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Emergency procedures

No action shall be taken involving any personal risk or without suitable training. Evacuate surrounding areas. Keep unnecessary and unprotected personnel from entering. Do not touch or walk through spilled material. Shut off all ignition sources. No flares, smoking or flames in hazard area. Avoid breathing vapor or mist. Provide adequate ventilation.

Small spill

Stop leak if without risk. Move containers from spill area. Use spark-proof tools and explosion-proof equipment. Dilute with water and mop up if water-soluble. Alternatively, or if water-insoluble, absorb with an inert dry material and place in an appropriate waste disposal container. Dispose of via a licensed waste disposal contractor.

Large spill

Stop leak if without risk. Move containers from spill area. Use spark-proof tools and explosion-proof equipment. Approach release from upwind. Prevent entry into sewers, water courses, basements or confined areas. Wash spillages into an effluent treatment plant or proceed as follows. Contain and collect spillage with non-combustible, absorbent material e.g. sand, earth, vermiculite or diatomaceous earth and place in container for disposal according to local regulations (see Section 13). Dispose of via a licensed waste disposal contractor.

Environmental

Avoid dispersal of spilled material and runoff and contact with soil, waterways, drains and sewers.

Cleanup methods

Dilute with water and mop up if water-soluble. Alternatively, or if water-insoluble, absorb with an inert dry material and place in an appropriate waste disposal container. Wash spillages into an effluent treatment plant or proceed as follows.

Materials: non-combustible, absorbent material e.g. sand, earth, vermiculite or diatomaceous earth

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Put on appropriate personal protective equipment (see Section 8). Do not swallow. Avoid contact with eyes, skin and clothing. Avoid breathing vapor or mist. Avoid release to the environment. Use only with adequate ventilation. Wear appropriate respirator when ventilation is inadequate. Do not enter storage areas and confined spaces unless adequately ventilated. Keep in the original container or an approved alternative made from a compatible material, kept tightly closed when not in use. Store and use away from heat, sparks, open flame or any other ignition source. Use explosion-proof electrical (ventilating, lighting and material handling) equipment. Use only non-sparking tools. Take precautionary measures against electrostatic discharges. Empty containers retain product residue and can be hazardous. Do not reuse container.

Storage

Store in accordance with local regulations. Store in a segregated and approved area. Store in original container protected from direct sunlight in a dry, cool and well-ventilated area, away from incompatible materials (see Section 10) and food and drink. Store locked up. Eliminate all ignition sources. Separate from oxidizing materials. Keep container tightly closed and sealed until ready for use. Containers that have been opened must be carefully resealed and kept upright to prevent leakage. Do not store in unlabeled containers.

Hygiene

Eating, drinking and smoking should be prohibited in areas where this material is handled, stored and processed. Workers should wash hands and face before eating, drinking and smoking. Remove contaminated clothing and protective equipment before entering eating areas.

Fire prevention

Store and use away from heat, sparks, open flame or any other ignition source. Use explosion-proof electrical (ventilating, lighting and material handling) equipment. Use only non-sparking tools. Take precautionary measures against electrostatic discharges. Ensure that all equipment is properly grounded and bonded.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Lower Explosive Limit
1.3%
Decomposition Temperature
---
Solidification Point
---
Appearance
Mobile liquid.
Kinematic Viscosity
Kinematic (40°C (104°F)): 0.01 cm²/s (1 cSt)
Solubility In Fat
---
Flammability
---
Freezing Point
---
Relative Evaporation Rate
---
Boiling Point
81°C (177.8°F)
Solubility
Insoluble in the following materials: cold water.
Metal Corrosion
---
Colour Intensity
---
Vapor Pressure
12.7 kPa (95.3 mm Hg) [room temperature]
Odor Threshold
---
Molecular Weight
---
Flash Point
Closed cup: -18°C (-0.4°F) [Tagliabue (ASTM D-56)]
Cloud Point
---
Colour
Colorless.
Softening Point
---
Evaporation Rate
5.6 (butyl acetate = 1)
State Under Standard Conditions
---
Physical State Data
liquid
Physical State
Liquid.
Ph
Not available.
Explosive Limits
---
Solubility In Water
---
Upper Explosive Limit
8.4%
Density
0.78 g/cm³
Voc Content
---
Relative Density
0.78
Melting Point
6.5°C (43.7°F)
Partition Coefficient
---
Bulk Density
---
Vapor Density
2.9 [Air = 1]
Crystallisation Point
---
Form
---
Odor
Hydrocarbon.
Dynamic Viscosity
---
Auto Ignition Temperature
260°C (500°F)
Properties Status
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

The product is stable.

Reactivity

Not expected to be Explosive, Self-Reactive, Self-Heating, or an Organic Peroxide under US GHS Definition(s).

Hazardous reactions

Under normal conditions of storage and use, hazardous reactions will not occur.

Avoid

Avoid all possible sources of ignition (spark or flame). Do not pressurize, cut, weld, braze, solder, drill, grind or expose containers to heat or sources of ignition. Do not allow vapor to accumulate in low or confined areas. Do not store with strong oxidizing agents.

Incompatible

Reactive or incompatible with the following materials: oxidizing materials

Decomposition

Under normal conditions of storage and use, hazardous decomposition products should not be produced.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

The data for this section has not been processed yet.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
UN1145
Shipping Name
Cyclohexane
Transport Class
3
Packing Group
II
15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

The data for this section has not been processed yet.

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Frequently Asked Questions

Common questions about safety, handling, and properties

What other names is Cyclohexane known by?

Cyclohexane is also known as: Benzene hexahydride; Hexahydrobenzene; Hexamethylene; CITGO® Material Code: 07504

What is the hazard signal word for Cyclohexane?

The signal word is danger.

What is the physical form of Cyclohexane?

Cyclohexane is a liquid. appearing as mobile liquid. with colorless. color. It has hydrocarbon. odor.

What is the solubility of Cyclohexane?

Insoluble in the following materials: cold water.

What are the hazard statements for Cyclohexane?

This substance has 5 hazard statements:

  • H225: Highly flammable liquid and vapor.
  • H304: May be fatal if swallowed and enters airways.
  • H315: Causes skin irritation.
  • H336: May cause drowsiness or dizziness.
  • H410: Very toxic to aquatic life with long lasting effects.

What is the melting point of Cyclohexane?

The melting point is 6.5°C (43.7°F) and the boiling point is 81°C (177.8°F).