2-Pentanol

  • 1-Methyl-1-butanol
  • 2-Pentyl alcohol
  • 2-Hydroxypentane
  • sec-Pentyl alcohol
  • sec-Amyl alcohol
  • Methylpropylcarbinol
Formula
CH3CH2CH2CH(OH)CH3
Structure
Description
Clear, colorless liquid with a characteristic, slightly pungent and penetrating odor.
Uses
2-Pentanol is used in the production of catalyst systems for dimerization and polymerization, and for the synthesis of methanol from carbon monoxide and hydrogen. It is also used as a solvent for primers containing phosphoric acid and for the extraction of 2-hydroxy-4-methylthiobutyric acid. Secondary pentanols are used in the production of lubricant additives; cleaning agents; defrosting agents; various herbicides; and many fragrances.

Registry Numbers and Inventories.
CAS
6032-29-7
EC (EINECS/ELINCS)
227-907-6
EC Index Number
603-006-00-7
EC Class
flammable, harmful
R 10 20
RTECS
SA4900000
RTECS class
Primary Irritant
UN (DOT)
1105
Merck
12,7258
Beilstein/Gmelin
1718819
Beilstein Reference
4-01-00-01656
Swiss Giftliste 1
G-2700
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H12O
Formula mass
88.15
Melting point, °C
-50
Boiling point, °C
118
Vapor pressure, mmHg
23 (20 C)
Vapor density (air=1)
3.0
Saturation Concentration
5400 ppm (0.54%) at 20 C; 8000 ppm (0.80%) at 25 C (calculated)
Density
0.805 g/cm3 (25 C)
Solubility in water
Soluble
Viscosity
2.89 cp (30 C)
Refractive index
1.40592 (15 C)
Partition coefficient, pKow
1.25
Heat of vaporization
41.6 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. 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 with adequate ventilation. Ground and bond containers when transferring material. Avoid contact with skin and eyes. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. 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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation.
Disposal code
1
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Strong oxidizing agents. Substance may explode on contact with hydrogen trisulfide.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
33
Autoignition, °C
343
Upper exp. limit, %
8.0
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. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Extinguishing media: Water may be ineffective. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. For small fires, use dry chemical, carbon dioxide, sand, earth, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
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.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause dermatitis.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause effects similar to those for inhalation exposure.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Inhalation of vapor may cause respiratory tract irritation. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause kidney damage.
   Skin
May cause skin irritation. May be absorbed through the skin. Causes symptoms similar to those of inhalation.
   Eyes
Vapors may cause eye irritation. Contact may cause eye irritation, lacrimation (tearing), burning pain, and inflammation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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
1105
Response guide
Hazard class
3
Packing Group
II; III
 
USCG CHRIS Code
ASE
 
20 Alcohols, Glycols
HS Code
2905 15 00
 
IMO Chemical Code
18
IMO Pollution Category
D