Pentane

ChemicalBook > CAS DataBase List > Pentane

Product Name: Pentane
CAS No.: 109-66-0
Chemical Name: Pentane
Synonyms: N-PENTANE;PETANE;Pentan;1-Pentane;n-C5H12;N-PENTAN;R601;NP80;PENTANE;Pentani
CBNumber: CB6288989
Molecular Formula: C5H12
Formula Weight: 72.15
MOL File: 109-66-0.mol

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Pentane Property

Melting point:: -130 °C
Boiling point:: 36 °C
Density: 0.626 g/mL at 25 °C(lit.)
vapor density: 2.48 (vs air)
vapor pressure: 26.98 psi ( 55 °C)
refractive index: n20/D 1.358
Flash point:: −57 °F
storage temp.: Store at +5°C to +30°C.
solubility: ethanol: soluble(lit.)
form: Liquid
pka: >14 (Schwarzenbach et al., 1993)
Specific Gravity: 0.63
color: Colorless
Relative polarity: 0.009
Odor: Like a gasoline.
Odor Threshold: 1.4ppm
explosive limit: 1.4-8%(V)
Water Solubility: insoluble
λmax: λ: 200 nm Amax: ≤0.70
λ: 210 nm Amax: ≤0.20
λ: 220 nm Amax: ≤0.07
λ: 230 nm Amax: ≤0.02
λ: 250 nm Amax: ≤0.004
Merck: 14,7116
BRN: 969132
Henry's Law Constant: 1.20 at 25 °C (J?nsson et al., 1982)
Exposure limits: TLV-TWA 600 ppm (～1800 mg/m³) (ACGIH), 1000 ppm (～3000 mg/m³) (OSHA), 500 ppm (～1500 mg/m³) (MSHA); STEL 750 ppm (～2250 mg/m³) (ACGIH).
Dielectric constant: 1.8（20℃）
InChIKey: OFBQJSOFQDEBGM-UHFFFAOYSA-N
LogP: 3.390
CAS DataBase Reference: 109-66-0(CAS DataBase Reference)
NIST Chemistry Reference: Pentane(109-66-0)
EPA Substance Registry System: Pentane (109-66-0)

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Safety

Hazard Codes: F+,Xn,N,F
Risk Statements: 12-51/53-65-66-67
Safety Statements: 9-16-29-33-61-62
OEB: A
OEL: TWA: 120 ppm (350 mg/m3), Ceiling: 610 ppm (1800 mg/m3) [15-minute]
RIDADR: UN 1265 3/PG 2
WGK Germany: 2
RTECS: RZ9450000
F: 3-10
Autoignition Temperature: 500 °F
TSCA: Yes
HazardClass: 3
PackingGroup: II
HS Code: 29011090
Hazardous Substances Data: 109-66-0(Hazardous Substances Data)
Toxicity: LC (in air) in mice: 377 mg/l (Fühner)
IDLA: 1,500 ppm [10% LEL]

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H336May cause drowsiness or dizziness

H411Toxic to aquatic life with long lasting effects

Precautionary statements

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

P273Avoid release to the environment.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: PX0170
Product name: Pentane
Packaging: 4L
Price: $318
Updated: 2024/03/01

Sigma-Aldrich

Product number: PX0170
Product name: Pentane
Packaging: 20L
Price: $1390
Updated: 2024/03/01

Sigma-Aldrich

Product number: PX0170
Product name: Pentane
Packaging: 127kg
Price: $4100
Updated: 2024/03/01

Sigma-Aldrich

Product number: PX0167
Product name: Pentane
Purity: OmniSolv?
Packaging: 4L
Price: $453
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.20957
Product name: n-Pentane
Purity: EMPLURA?
Packaging: 1L
Price: $126
Updated: 2024/03/01

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Pentane Chemical Properties,Usage,Production

Chemical Properties

Pentane is a colorless liquid. Gas above 36C. Gasoline-like odor.

Chemical Properties

n-Pentane is a flammable liquid. It has applications in industry as an aerosol propellant and as an important component of engine fuel.

pentane lewis structure
N-propane is a CNS depressant. Studies with dogs have indicated that it induces cardiac sensitization. In high concentrations it causes incoordination and inhibition of the righting refl exes.
N-pentane is being used primarily in Europe in integral-skin flexible foams. Pentane is twice as effective as CFC-11 as a blowing agent.

Physical properties

Clear, colorless, volatile liquid with an odor resembling gasoline. An odor threshold concentration of 1.4 ppm_v was reported by Nagata and Takeuchi (1990).

Uses

n-Pentane occurs in volatile petroleum fractions(gasoline) and as a constituent ofpetroleum ether. It is used as a solvent, in themanufacture of low-temperature thermometers,and as a blowing agent for plastics.

Uses

n-Pentane is a flammable liquid. It has diverse uses in industry—for instance, as an aerosol propellant and as an important component of engine fuel. n-Pentane is a CNS depressant. Laboratory studies in dogs indicate that prolonged exposure to high concentrations of n-pentane induces cardiac sensitization, poor coordination, and inhibition of the righting reflexes. NIOSH has recommended limits of n-pentane for working areas.

Uses

Fuel; solvent; chemical synthesis

Production Methods

Pentane is produced by fractional distillation of natural gas liquids and crude oil. It is also produced by the catalytic crackdown of naphtha.

Definition

A straightchain alkane obtained by distillation of crude oil.

Definition

pentane: A straight-chain alkanehydrocarbon, C5H12; r.d. 0.63; m.p.–129.7°C; b.p. 36.1°C. It is obtainedby distillation of petroleum.

General Description

A clear colorless liquid with a petroleum-like odor. Flash point 57°F. Boiling point 97°F. Less dense than water and insoluble in water. Hence floats on water. Vapors are heavier than air.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

Pentane is incompatible with strong oxidizers. Pentane is also incompatible with strong acids, alkalis, and oxygen. Mixtures with chlorine gas have produced explosions. Pentane will attack some forms of plastics, rubber, and coatings. .

Health Hazard

n-Pentane did not exhibit any marked toxicityin animals. However, inhalation ofits vapors at high concentrations can causenarcosis and irritation of the respiratorypassages. Such effects may be observedwithin the range 5–10% concentration inair. In humans, inhalation of 5000 ppm for10 minutes did not cause respiratory tractirritation or other symptoms (Patty and Yant1929).
There is no report in the literature indicatingany adverse effects from pentaneother than narcosis and irritation. An intravenousLD50 value in mouse is recorded as446 mg/kg (NIOSH 1986).

Fire Hazard

Behavior in Fire: Containers may explode

Flammability and Explosibility

Extremely flammable

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Moderately toxic by inhalation and intravenous routes. Narcotic in high concentration. The liquid can cause blisters on contact. Flammable liquid. Highly dangerous fire hazard when exposed to heat, flame, or oxidizers. Severe explosion hazard when exposed to heat or flame. Shock can shatter metal containers and release contents. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes

Potential Exposure

Pentane is used in manufacture of ice, low-temperature thermometers; in solvent extraction processes; as a blowing agent in plastics; as a fuel; as a chemical intermediate (for amylchlorides, e.g.).

Source

Schauer et al. (1999) reported pentane in a diesel-powered medium-duty truck exhaust at an emission rate of 1,860 μg/km.
A constituent in gasoline. Harley et al. (2000) analyzed the headspace vapors of three grades of unleaded gasoline where ethanol was added to replace methyl tert-butyl ether. The gasoline vapor concentrations of pentane in the headspace were 14.2 wt % for regular grade, 12.6 wt % for midgrade, and 9.3 wt % for premium grade.
California Phase II reformulated gasoline contained pentane at a concentration of 27.6 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 4.29 and 536 mg/km, respectively (Schauer et al., 2002).
Schauer et al. (2001) measured organic compound emission rates for volatile organic compounds, gas-phase semi-volatile organic compounds, and particle-phase organic compounds from the residential (fireplace) combustion of pine, oak, and eucalyptus. The gas-phase emission rate of pentane was 4.7 mg/kg of pine burned. Emission rates of pentane were not measured during the combustion of oak and eucalyptus.

Environmental Fate

Biological. n-Pentane may biodegrade in two ways. The first is the formation of pentyl hydroperoxide, which decomposes to 1-pentanol followed by oxidation to pentanoic acid. The other pathway involves dehydrogenation to 1-pentene, which may react with water giving 1- pentanol (Dugan, 1972). Microorganisms can oxidize alkanes under aerobic conditions (Singer and Finnerty, 1984). The most common degradative pathway involves the oxidation of the terminal methyl group forming 1-pentanol. The alcohol may undergo a series of dehydrogenation steps forming an aldehyde (valeraldehyde) then a fatty acid (valeric acid). The fatty acid may then be metabolized by β-oxidation to form the mineralization products, carbon dioxide and water (Singer and Finnerty, 1984). Mycobacterium smegnatis was capable of degrading pentane to 2- pentanone (Riser-Roberts, 1992).
Photolytic. When synthetic air containing gaseous nitrous acid and pentane was exposed to artificial sunlight (λ = 300–450 nm) methyl nitrate, pentyl nitrate, peroxyacetal nitrate, and peroxypropionyl nitrate formed as products (Cox et al., 1980).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water. Pentane will not hydrolyze because it does not contain a hydrolyzable functional group.

Shipping

UN1265 Pentanes Hazard Class: 3; Labels: 3-Flammable liquid.

Purification Methods

Stir the pentane with successive portions of conc H2SO4 until there is no further coloration during 12hours, then with 0.5N KMnO4 in 3M H2SO4 for 12hours, wash with water and aqueous NaHCO3. Dry it with MgSO4 or Na2SO4, then P2O5 and fractionally distil it through a column packed with glass helices. It is also purified by passage through a column of silica gel, followed by distillation and storage with sodium hydride. An alternative purification is by azeotropic distillation with MeOH, which is subsequently washed out from the distillate (using water), followed by drying and re-distilling. For removal of carbonyl-containing impurities, see n-heptane. Also purify it by fractional freezing (ca 40%) on a copper coil through which cold air is passed, then wash with conc H2SO4 and fractionally distil it. [Beilstein 1 IV 303.]

Toxicity evaluation

The mechanism of toxicity is suspected to be similar to other solvents that rapidly induce anesthesia-like effects, that is a ‘nonspecific narcosis’ due to disruption (solvation) of the integrity of the cellular membranes of the central nervous system. The effect is similar to the ‘high’ experienced upon exposure to other aliphatic hydrocarbon solvents.
As seen with other short-chain alkanes, upon inhalation, pentane is moderately toxic and may cause irritation of the respiratory tract and narcosis. The narcotic action of pentane (observed following 1-h exposure to 90 000–120 000 ppm) is, however, much less pronounced than effects seen following exposure to the C1–C4 alkanes. Although the actual biochemical mechanismof toxicity has not been discerned, the narcotic effects seen are most likely related to its physical solvent properties.

Incompatibilities

Vapors may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Attacks some plastics, rubbers, and coatings.

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.

Pentane Preparation Products And Raw materials

Raw materials

Preparation Products

5-METHOXY-QUINAZOLIN-4-YLAMINE 1-Heptanol 2-Amino-5-nitropyrimidine 1,4-Dibromopentane 2-Bromo-5-hydroxypyridine radical ion(1+) 3-Aminopyridazine hydrochloride EUROPIUM D-3-TRIFLUOROACETYLCAMPHORATE Cefepime 3,6,9,12-tetraoxahexadecan-1-ol Di-tert-butylchlorophosphane HEPTENOPHOS 1-Cyclopentenecarboxylic acid ORNOPROSTIL 4-BROMO-3-(TRIFLUOROMETHYL)-1-PHENYL-1H-PYRAZOLE 2,2,4,6,7-Pentamethyldihydrobenzofuran-5-sulfonyl chloride 3-TRIFLUOROACETYL-D-CAMPHOR tert-Butyldimethylsilyl chloride 1-AMINOCYCLOPROPANECARBONITRILE Ketamine hydrochloride Bis(pinacolato)diboron 4-Benzyloxybenzeneboronic acid 1-TERT-BUTYL-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE-4-CARBOXYLIC ACID 4,6-DIHYDROXY-5-METHYLPYRIMIDINE 2,4,6-Triisopropylbenzenesulfonyl chloride 2-METHOXYPHENOXYACETIC ACID Fexofenadine DI-TERT-BUTYLDICHLOROSILANE 2-Methylbutane 1-Bromo-4-methoxybutane 2-AMINOPENT-4-YNENITRILE Cyclobutanol TERT-BUTYL 4-FORMYLPYRIDIN-3-YLCARBAMATE Cyclopentane ETHYL 1-TERT-BUTYL-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE-4-CARBOXYLATE 2-(4-Bromophenyl)-2-methylpropionic acid (TRIMETHYLSILYL)ACETIC ACID 4-BROMO-1-METHYL-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE 1-TERT-BUTYL-4-BROMO-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE (S)-2-Methylproline CHLOROMETHYL METHYL SULFIDE

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View Lastest Price from Pentane manufacturers

Hebei Weibang Biotechnology Co., Ltd

Product: Pentane 109-66-0
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-19

Yujiang Chemical (Shandong) Co.,Ltd.

Product: Pentane 109-66-0
Price: US $1300.00/T
Min. Order: 1T
Purity: 98%
Supply Ability: 20T
Release date: 2024-05-07

Yujiang Chemical (Shandong) Co.,Ltd.

Product: N-Pentane
Price: US $1300.00/T
Min. Order: 1T
Purity: 98%
Supply Ability: 20T
Release date: 2024-05-07

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