Butyl alcohol

  • n-Butanol
  • 1-Butanol
  • Propyl carbinol
  • Butan-1-ol
Formula
CH3(CH2)3OH
Structure
Description
Clear, colorless liquid with a characteristic, mildly alcoholic odor.
Uses
Is employed as a solvent for paints, lacquers & varnishes, natural & synthetic resins, gums, vegetable oils, dyes & alkaloids. It is used as an intermediate in the manufacture of pharmaceuticals & chemicals, & employed in industries producing artificial leather, textiles, safety glass, rubber cement, shellac, raincoats, photographic films & perfumes.

Registry Numbers and Inventories.
CAS
71-36-3
EC (EINECS/ELINCS)
200-751-6
EC Index Number
603-004-00-6
EC Class
Flammable; Harmful; Irritant; Vapours may cause drowsiness and dizziness
R 10 22 37/38 41 67
S 7/9 13 26 37/39 46
RTECS
EO1400000
RTECS class
Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1120
Merck
13,1539
Beilstein/Gmelin
969148
Beilstein Reference
4-01-00-01506
RCRA
U031
Swiss Giftliste 1
G-1321
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H10O
Formula mass
74.12
Melting point, °C
-89
Boiling point, °C
117.6
Vapor pressure, mmHg
7.24 (25 C)
Vapor density (air=1)
2.6
Saturation Concentration
0.53-0.72% at 20 C
Evaporization number
33 (diethyl ether = 1)
Odor Threshold Odor threshold 0.83 ppm
Critical temperature
290
Critical pressure
43.6
Density
0.812 g/cm3 (20 C)
Solubility in water
63 g/L (25 C)
Viscosity
2.55 cp (25 C)
Surface tension
26.28 g/s2 @ 10 C
Refractive index
1.3993 (20 C)
Dipole moment
1.66 D (20 C)
Dielectric constant
17.8 (20 C)
Partition coefficient, pKow
0.88
Heat of fusion
9.3 kJ/mol
Heat of vaporization
46.4 kJ/mol
Heat of combustion
-2672 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from explosives, organic peroxides, poisons, and radioactive materials.
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. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. 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 and appropriate protective clothing to prevent skin exposure.
Respirators
A full facepiece respirator with organic vapor cartridge may be worn up to 50 times the exposure limit or the maximum use 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.
Small spills/leaks
Avoid runoff into storm sewers and ditches which lead to waterways. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. Water spray may reduce vapor but may not prevent ignition in closed spaces.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, reducing agents, acid chlorides, alkali metals, aluminum, copper, copper alloys, halogens, organic peroxides, acid anhydrides, chromium trioxide, mineral acids.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
34
Autoignition, °C
340
Upper exp. limit, %
11.3
Lower exp. limit, %
1.4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
HIGHLY FLAMMABLE.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Toxic gases and vapors (such as carbon monoxide) may be released in a fire involving butyl alcohol.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 100 ppm (300 mg/m3) NIOSH REL: C 50 ppm (150 mg/m3) skin NIOSH IDLH: 1400 ppm LEL
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause reproductive and fetal effects. Laboratory experiments have resulted in mutagenic effects. Prolonged exposure may cause liver, kidney, and heart damage. May cause damage to the auditory nerve (some hearing loss) and vestibular injury.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause systemic toxicity with acidosis. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May be harmful if swallowed. Aspiration may be fatal. May be absorbed from the gastrointestinal tract.
   Inhalation
Causes respiratory tract irritation. May cause cardiovascular disturbances, hearing abnormalities, central nervous system depression, muscle weakness, and possible death due to respiratory failure. May be absorbed through the lungs.
   Skin
Causes severe skin irritation. May be harmful if absorbed through the skin. Repeated or prolonged exposure may cause drying and cracking of the skin.
   Eyes
Causes severe eye irritation. May cause corneal edema and inflammation. May cause lacrimation (tearing), blurred vision, and photophobia. Vapors appear to cause a special vacuolar keratopathy in humans.

First aid
 
   Ingestion
Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. Call a physician.
   Inhalation
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. 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. 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 immediately.

Transport.
UN number
1120
Response guide
Hazard class
3
Packing Group
II; III
 
USCG CHRIS Code
BAN
 
20 Alcohols, Glycols
HS Code
2905 13 00
 
Std. Transport #
4910601
 
IMO Chemical Code
18
IMO Pollution Category
III