PENTANE FRACTION
n-Pentane
CAS: 109-66-0
Molecular Formula: C5H12
PENTANE FRACTION - Names and Identifiers
| Name | n-Pentane |
| Synonyms | PETANE PENTANE pentane N-PENTAN n-Pentane N-PENTANE PENTANE-195 Pentane oil NORMAL PENTANE PENTANE FRACTION Pentane mixed isomers |
| CAS | 109-66-0 |
| EINECS | 203-692-4 |
| InChI | InChI=1/C5H12/c1-3-5-4-2/h3-5H2,1-2H3 |
| InChIKey | OFBQJSOFQDEBGM-UHFFFAOYSA-N |
PENTANE FRACTION - Physico-chemical Properties
| Molecular Formula | C5H12 |
| Molar Mass | 72.15 |
| Density | 0.626g/mLat 25°C(lit.) |
| Melting Point | -130 °C |
| Boling Point | 36 °C |
| Flash Point | −57°F |
| Water Solubility | insoluble |
| Solubility | ethanol: soluble(lit.) |
| Vapor Presure | 26.98 psi ( 55 °C) |
| Vapor Density | 2.48 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.63 |
| Color | Colorless |
| Odor | Like a gasoline. |
| Exposure Limit | 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). |
| Maximum wavelength(λmax) | ['λ: 200 nm Amax: ≤0.70', , 'λ: 210 nm Amax: ≤0.20', , 'λ: 220 nm Amax: ≤0.07', , 'λ: |
| Merck | 14,7116 |
| BRN | 969132 |
| pKa | >14 (Schwarzenbach et al., 1993) |
| Storage Condition | Store at +5°C to +30°C. |
| Explosive Limit | 1.4-8%(V) |
| Refractive Index | n20/D 1.358 |
| Physical and Chemical Properties | Colorless flammable liquid. solubility slightly soluble in ethanol, soluble in ether and hydrocarbons. |
| Use | It is mainly used for molecular sieve desorption and replacing Freon as foaming agent, used as solvent, manufacturing artificial ice, anesthetic, synthesis of pentanol, isopentane, etc |
PENTANE FRACTION - Risk and Safety
| Risk Codes | R12 - Extremely Flammable R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R65 - Harmful: May cause lung damage if swallowed R66 - Repeated exposure may cause skin dryness or cracking R67 - Vapors may cause drowsiness and dizziness |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S29 - Do not empty into drains. S33 - Take precautionary measures against static discharges. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. |
| UN IDs | UN 1265 3/PG 2 |
| WGK Germany | 2 |
| RTECS | RZ9450000 |
| FLUKA BRAND F CODES | 3-10 |
| TSCA | Yes |
| HS Code | 29011090 |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LC (in air) in mice: 377 mg/l (Fühner) |
PENTANE FRACTION - Nature
Open Data Verified Data
colorless liquid with faint mint aroma. Soluble in water (16 °c) 0.36glL. Soluble in ethanol, ether, acetone, benzene, chloroform and other organic solvents. Extremely flammable, its vapor and air can form an explosive mixture. It is highly flammable and explosive when exposed to open flame and high heat. Strong reactions with oxidants can occur and even cause combustion.
Last Update：2025-06-10 22:55:16
PENTANE FRACTION - Preparation Method
Open Data Verified Data
obtained by hydrogenation of maleic anhydride or by hydrogenation of furan in the presence of a nickel catalyst.
Last Update：2022-01-01 09:24:35
PENTANE FRACTION - Application
Open Data Verified Data
gas chromatographic analysis standard. It is used in the manufacture of anesthetics, solvents, cryogenic thermometers, and in the manufacture of artificial ice, pentanol, isopentane, etc.
Last Update：2025-08-19 16:24:40
PENTANE FRACTION - Safety
Open Data Verified Data
high concentrations can cause ocular and respiratory mucosa mild irritation symptoms and anesthesia, and even loss of consciousness. The staff should be protected and the working environment should be well ventilated. When there is a fire, foam, dry powder, carbon dioxide and sand can be used to suppress the fire.
Last Update：2025-06-10 22:55:16
PENTANE FRACTION - Reference Information
| relative polarity | 0.009 |
| olfactory Threshold | 1.4ppm |
| Henry's Law Constant | 1.20 at 25 °C (J?nsson et al., 1982) |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| uses | mainly used for molecular sieve desorption and replacing Freon as foaming agent mainly used for molecular sieve desorption and replacing Freon as foaming agent suitable for high density polyethylene polymerization catalyst solvent, plastic foaming solvent and other solvents solvent. Standard for gas chromatographic analysis. Organic Synthesis. Anesthetic. Manufacturing of cryogenic thermometers. |
| category | flammable liquid |
| toxicity grade | low toxicity |
| Acute toxicity | inhalation-mouse LCL0: 32500 mg/m3/2 h |
| explosive hazard characteristics | explosive when mixed with air |
| flammability hazard characteristics | in case of open flame, high temperature, flammable oxidant; Combustion stimulus smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from oxidants and acids |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Occupational Standard | TWA 1800 mg/m3 |
| spontaneous combustion temperature | 500 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentrations | 1,500 ppm [10% LEL] |
Last Update：2024-04-09 21:04:16
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