Hexane

  • n-Hexane
Formula
CH3(CH2)4CH3
Structure
Description
Clear, colorless, fairly volatile liquid with a faint gasoline-like odor.
Uses
Determination of refractive index of minerals, filling for thermometers, solvent, laboratory reagent.

Registry Numbers and Inventories.
CAS
110-54-3
EC (EINECS/ELINCS)
203-777-6
EC Index Number
601-037-00-0
EC Class
Highly flammable; Toxic for reproduction Category 3; Harmful; Irritant; Vapours may cause drowsiness and dizziness; Dangerous for the Environment
R 11 38 48/20 51/53 62 65 67
S 9 16 29 33 36/37 61 62
RTECS
MN9275000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1208
Merck
13,4712
Beilstein/Gmelin
1730733
Beilstein Reference
4-01-00-00338
Swiss Giftliste 1
G-1685
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H14
Formula mass
86.18
Melting point, °C
-94.3
Boiling point, °C
69
Vapor pressure, mmHg
150 (25 C)
Vapor density (air=1)
3.0
Saturation Concentration
16.3% at 20 C
Evaporization number
9 (butyl acetate=1)
Critical temperature
234
Critical pressure
29.7
Density
0.65488 g/cm3 (25 C)
Solubility in water
2 mg/L (20 C)
Viscosity
0.372 cp (20 C)
Surface tension
18.4 g/s2 (20 C)
Refractive index
1.375 (20 C)
Dipole moment
0 D
Dielectric constant
1.8 (20 C)
Partition coefficient, pKow
3.94
Heat of fusion
13.0 kJ/mol
Heat of vaporization
32.6 kJ/mol
Heat of combustion
-4198 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Keep away from sources of ignition. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
B2 D2B
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Take precautionary measures against static discharges. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids, strong reducing agents, dinitrogen tetraoxide, magnesium perchlorate, fluorine, oxygen, peroxides, dichromates, caustics, halogens, liquid chlorine, Attacks some forms of plastics, rubbers, and coatings..
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
-23
Autoignition, °C
224
Upper exp. limit, %
7.7
Lower exp. limit, %
1.2
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Extremely flammable liquid. Water may be ineffective. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Water may be ineffective. Water may spread fire. If water is the only media available, use in flooding amounts. For large fires, use water spray, fog or alcohol resistant foam.
Fire potential
Flammable liquid and vapor.
Hazards
Material is lighter than water and a fire may be spread by the use of water. Will be easily ignited by heat, sparks or flame. Containers may explode if exposed to fire.
Combustion products
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (as TWA): 50 ppm; 176 mg/m3 (ACGIH 1992-1993). MAK: 50 ppm; 180 mg/m3; (1992). OSHA PEL: TWA 500 ppm (1800 mg/m3) NIOSH REL: TWA 50 ppm (180 mg/m3) NIOSH IDLH: 1100 ppm LEL
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis. Prolonged or repeated exposure may cause adverse reproductive effects. May cause fetal effects. Chronic exposure may cause visual disturbances. Laboratory experiments have resulted in mutagenic effects. Repeated exposure may cause nervous system abnormalities with muscle weakness and damage, motor incoordination, and sensation disturbances. Chronic exposure produces peripheral neuropathy.
   Ingestion
May produce abdominal pain, nausea. Aspiration into lungs can produce severe lung damage and is a medical emergency. Other symptoms expected to parallel inhalation.
   Inhalation
Inhalation of vapors irritates the respiratory tract. Overexposure may cause lightheadedness, nausea, headache, and blurred vision. Greater exposure may cause muscle weakness, numbness of the extremities, unconsciousness and death.
   Skin
Causes irritation with burning pain, itching, and redness. May cause blistering of the skin. Absorbed through the skin.
   Eyes
Causes mild eye irritation. Causes redness and pain. May cause blurred vision, tearing, and conjunctivitis.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Possible aspiration hazard. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1208
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
HXA
 
HS Code
2901 10 90
 
Std. Transport #
4908183
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P