2-Pentanol Property

Melting point:

-50 °C

Boiling point:

118-119 °C (lit.)

Density 

0.812 g/mL at 25 °C (lit.)

vapor density 

3 (vs air)

vapor pressure 

3 hPa (20 °C)

FEMA 

3316 | 2-PENTANOL

refractive index 

n20/D 1.406(lit.)

Flash point:

93 °F

storage temp. 

Store below +30°C.

solubility 

166g/l

form 

Liquid

pka

15.31±0.20(Predicted)

color 

Clear colorless

Relative polarity

0.488

Odor

at 100.00 %. mild green fusel oil fermented

Odor Type

fermented

Odor Threshold

0.29ppm

explosive limit

1.2-10.5%(V)

Water Solubility 

16.6 g/ 100 mL (20 ºC)

Merck 

14,7119

JECFA Number

280

BRN 

1718819

Dielectric constant

13.8（22℃）

InChIKey

JYVLIDXNZAXMDK-UHFFFAOYSA-N

LogP

1.22

CAS DataBase Reference

6032-29-7(CAS DataBase Reference)

NIST Chemistry Reference

2-Pentanol(6032-29-7)

EPA Substance Registry System

2-Pentanol (6032-29-7)

Safety

Hazard Codes 

Xn

Risk Statements 

10-20-37-66

Safety Statements 

46

OEB

A

OEL

TWA: 100 ppm (360 mg/m3), STEL: 125 ppm (450 mg/m3)

RIDADR 

UN 1105 3/PG 3

WGK Germany 

1

RTECS 

SA4900000

Autoignition Temperature

649 °F

TSCA 

Yes

HazardClass 

3

PackingGroup 

III

HS Code 

29051500

Toxicity

LD50 orally in Rabbit: 1470 mg/kg LD50 dermal Rabbit 5250 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H226Flammable liquid and vapour

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

2-Pentanol Chemical Properties,Usage,Production

Description

2-Pentanol is a clear liquid that is soluble in water and alcohol. It has a fermented, alcoholic smell. It is used as a flavor and fragrance agent and applied in foods which require a crisp herbal or fruity smell and flavors such as dill, cucumber, cilantro, melon, rhubarb, guava, or tomato. It is used in baked goods, puddings, gravies, meat products, seasonings, soups, and non-alcoholic beverages. 2-pentanol is also used as a solvent and intermediate for the synthesis of other chemicals.

References

[1] https://en.wikipedia.org/wiki/2-Pentanol

Chemical Properties

clear colourless liquid

Chemical Properties

Amyl alcohols (pentanols) have eight isomers. All are flammable, colorless liquids, except the isomer 2,2- dimethyl-1-propanol, which is a crystalline solid.

Chemical Properties

2-Pentanol has a mild green, fusel-oil odor. This compound is also reported as having a winy, ethereal odor.

Occurrence

Reported found in banana, Satsuma mandarin peel oil, peach, raw asparagus, vinegar, wheaten bread, cheddar cheese, Swiss cheese, other cheeses, roasted barley, roasted filbert, roasted peanut, plum brandy, Bourbon vanilla, Chinese quince, apple, orange juice, bilberry, cranberry, guava, grapes, melon, papaya, pineapple, strawberry, ginger, butter, chicken fat, hop oil, beer, cognac, Scotch whiskey, rum, cider, red wine, cocoa, tea, oats, honey, soybean, coconut meat, passion fruit, beans, mushroom, starfruit, mango, malt, mountain papaya, endive, shrimp, naranjilla fruit and cape gooseberry.

Uses

(±)-2-Pentanol is a widely used solvent and a building block used in the synthesis of consumer products.

Uses

2-Pentanol is a secondary alcohol that can be used as:

• A hydrogen donor in the synthesis of methyl furan via catalytic transfer hydrogenation of furfural over a ruthenium/ruthenium oxide/carbon catalyst.
• A reagent in one-pot synthesis of brominated derivatives of 1,3-dioxolane.
• A solvent for the synthesis of organic molecules such as 2, 4-diaminopyrimidines and 4-aza-podophyllotoxins.

Preparation

By catalytic reduction of methyl n-propyl ketone.

Definition

ChEBI: A secondary alcohol that is pentane substituted at position 2 by a hydroxy group.

General Description

2-Pentanol, a secondary alcohol, is a volatile organic compound (VOC) that is a common aroma-active component of food and beverage products.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. A narcotic. A skin and severe eye irritant. Flammable liquid when exposed to heat or flame; can react with oxidzing materials. A severe explosion hazard when exposed to heat or flame. To fight fire, use alcohol foam, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALCOHOLS

Potential Exposure

(n-isomer); Suspected reprotoxic hazard, Primary irritant (w/o allergic reaction), (iso-, primary): Possible risk of forming tumors, Primary irritant (w/o allergic reaction), (sec-, active primary-, and other isomers) Primary irritant (w/o allergic reaction). Used as a solvent in organic synthesis and synthetic flavoring, pharmaceuticals, corrosion inhibitors; making plastics and other chemicals; as a flotation agent. The (n-isomer) is used in preparation of oil additives, plasticizers, synthetic lubricants, and as a solvent.

Shipping

UN2811 Pentanols, Hazard Class: 3; Labels: 3- Flammable liquid. UN1987 Alcohols, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid.

Purification Methods

Refluxed it with CaO, distil it, then reflux it with magnesium and again fractionally distil it. [Beilstein 1 IV 1655.]

Incompatibilities

Forms an explosive mixture with air. Contact with strong oxidizers and hydrogen trisulfide may cause fire and explosions. Incompatible with strong acids. Violent reaction with alkaline earth metals forming hydrogen, a flammable gas.

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.