Description

The molecular formula of isopentane is C5H12. It is colorless, transparent and isovolatile liquid with pleasant aromatic smell. High purity isopentane is widely used in organic synthesis reaction and separation and purification of organic substances. It can also be used as solvent and refrigerant. Industrial grade blended gasoline, as a gasoline blending component, has the characteristics of high octane number, low density, high octane number and good low-temperature starting performance.
Chinese Name: 异戊烷
English Name: isoopentane
Alias: 2-methylbutane
Chemical formula: C5H12
Molecular weight: 72.15
CAS accession No.: 78-78-4
EINECS login No.: 201-142-8
Melting point: – 159.9 ℃
Boiling point: 27.8 ℃
Density: 0.62 g / cm ³
Appearance: colorless liquid
Flash point: – 56.67 ℃
Applications: it is used in organic synthesis and also as solvent. UN dangerous goods No. 31002 is soluble, insoluble in water, slightly soluble in ethanol, soluble in most organic solvents such as hydrocarbons and ether, and the refractive index is 1.354. Isopentane is an effective catalyst carrier and coolant in the polymerization process of ethylene units, such as SABIC ethylene unit or Sinopec ethylene unit. Other applications include foaming agents, condensing agents, asphalt modifiers, propellants or active ingredients in pharmaceuticals and pesticides.
EINECS No.: 201-142-8
Molecular formula: C5H12; (CH3)2CHCH2CH3
Molecular weight: 72.15
InChI:InChI=1/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3
Melting point: – 159.9 ℃
Density: relative density (water = 1) 0.62;
Boiling point: 27.8 ℃
Flash point: – 51 ℃
Application: it can be used as solvent for catalyst in polyethylene production, foaming agent for expandable polystyrene, foaming agent for polyurethane foam system, deasphalting solvent, etc.
Safety terminology: S9:; S16:; S29:; S33:; S61:; S62:;
Risk term: R12:; R51/53:; R65:; R66:; R67:;
Relevant categories: Industrial / fine chemicals; refrigerants; Organics; Alkane; ACS and Reagent Grade Solvents; ReagentPlus Solvent Grade Products; Solvent Bottles; Solvent by Application; Solvent Packaging Options; Solvents; Sure/Seal Bottles; Anhydrous Solvents; SAJ First Grade (Japan only); Solvents by Special Grades (Japan Customers Only); Amber Glass Bottles; NMR; Spectrophotometric Grade; Spectrophotometric Solvents; Spectroscopy Solvents (IR;UV/Vis); Analytical Reagents; Analytical/Chromatography; CHROMASOLV for HPLC; Chromatography Reagents &; HPLC &; HPLC Grade Solvents (CHROMASOLV); HPLC/UHPLC Solvents (CHROMASOLV); UHPLC Solvents (CHROMASOLV); Standard; Analytical standard; Anhydrous solvent; Ultra dry solvent; Solvent; Genomics and molecular diagnostics; Pyrazoles
Mol file: 78-78-4 mol
Category
Flammable liquid
Toxicity classification: low toxicity
Acute toxicity inhalation – mouse lcl0: 419000 mg / m3 / 2 h
The dangerous characteristics of explosives are explosive when mixed with air
Flammability hazard characteristics: it is flammable in case of open fire, high temperature and oxidant; Combustion produces irritating smoke
Storage and transportation characteristics: the warehouse is ventilated and dry at low temperature; Store separately from oxidants and acids
Fire extinguishing agent dry powder, dry sand, carbon dioxide, foam
Occupational standard TWA 1500 mg / m3
Safety Information
Dangerous goods sign F +, xn, n
Hazard category code 12-51 / 53-65-66-67
Safety instructions 9-16-29-33-61-62
Dangerous goods transport No. UN 1265 3 / PG 1
WGK Germany 2
RTECS No. ek4430000
HazardClass 3
PackingGroup I
Toxic substances data 78-78-4
Product Uses
It can be used as solvent of catalyst in polyethylene production, foaming agent of expandable polystyrene, foaming agent of polyurethane foam system, deasphalting solvent and so on [1].
When used as a solvent, it has the same effect as pentane, hexane and heptane, and its solubility is slightly worse than pentane. The product has high octane number and can be used as fuel for automobiles and aircraft.
Transportation No. of Insurance Products
UN 1265
Impact on the Environment
This substance is harmful to the environment. Special attention should be paid to the pollution of surface water, soil, atmosphere and drinking water, which can be biodegraded in the environment.
Health Hazards
Invasion route: inhalation and ingestion.
Health hazards: mainly anesthesia and mild irritation. It can cause irritation of eyes and respiratory tract. In severe cases, there are anesthetic symptoms and even loss of consciousness.
Chronic Effects: mild irritation of eyes and respiratory tract. Mild dermatitis may occur after long-term skin contact.
Toxicological data and environmental behavior
Acute toxicity: lc501000mg / m3 (inhalation in mice)
Hazard characteristics: extremely flammable, and its vapor and air can form explosive mixture. In case of open fire and high heat, it is very easy to burn and explode. It can react strongly with oxidant and even cause combustion. Its vapor is heavier than air and can diffuse to a considerable distance at a lower place. It will ignite in case of open fire. In case of high heat, the internal pressure of the container increases, and there is a risk of cracking and explosion.
Combustion (decomposition) products: carbon monoxide, carbon dioxide.
Laboratory Monitoring
For gas chromatography, refer to manual of Analytical Chemistry (Volume IV, chromatographic analysis), chemical industry press
Environmental Standards
The maximum allowable concentration of harmful substances in the air of workshops in the former Soviet Union is 300mg / m3
Emergency Management
Leakage Emergency Treatment
Quickly evacuate the personnel in the leakage contaminated area to the safe area, isolate them and strictly restrict their access. Cut off the fire source. It is recommended that emergency treatment personnel wear self-contained positive pressure respirator and fire protective clothing. Cut off the source of leakage as much as possible. Prevent entry into restricted spaces such as sewers and flood drainage ditches. Small leakage: absorb with activated carbon or other inert materials. It can also be washed with emulsion made of non combustible dispersant and diluted with lotion to put into the waste water system. Massive leakage: build a dike or dig a pit to receive; Cover with foam to reduce steam damage. Transfer to tank car or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.
Protective Measures
Respiratory protection: generally, special protection is not required, but it is recommended to wear self-priming filter gas mask (half mask) under special circumstances.
Eye protection: wear chemical safety glasses when necessary.
Body protection: wear anti-static work clothes.
Hand protection: wear benzene and oil resistant gloves.
Others: smoking is strictly prohibited at the work site. Avoid long-term repeated contact
First Aid Measures
Skin contact: take off the contaminated clothes and wash the skin thoroughly with soapy water and clear water.
Eye contact: lift the eyelids and rinse with flowing water or normal saline. See a doctor.
Inhalation: quickly leave the site to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. See a doctor.
Ingestion: drink enough warm water, induce vomiting and seek medical advice.
Fire extinguishing method: spray water to cool the container, and move the container from the fire site to an open place if possible. If the container in the fire site has changed color or generated sound from the safety pressure relief device, it must be evacuated immediately. Fire extinguishing agents: foam, dry powder, carbon dioxide and sand. Extinguishing with water is ineffective.
Safety Terminology
S9Keep container in a well-ventilated place. Keep containers in a well ventilated place.
S16Keep away from sources of ignition. Keep away from sources of ignition.
S29Do not empty into drains. Do not pour into the sewer.
S33Take precautionary measures against static discharges. Take measures to prevent static electricity.
S61Avoid release to the environment. Refer to special instructions / safety data sheets. Avoid release into the environment. Refer to special instructions / safety data sheets.
S62If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. Do not induce vomiting if swallowed; Seek medical attention immediately and show its container or label.
Risk Terminology
R12Extremely flammable. Extremely flammable.
R51/53 Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. It is toxic to aquatic organisms and may have long-term adverse effects on the water environment.
R65Harmful: may cause lung damage if swallowed. Swallowing may cause lung damage.
R66Repeated exposure may cause skin dryness or cracking. Long term contact may cause dry skin.
R67Vapours may cause drowsiness and dizziness. Steam can cause drowsiness and dizziness.

Junyuan Petroleum Group is a leading manufacturer of Isopentane globally, an ISO 9001, ISO 14001 and OHSAS 18001-certified company, is a global leader in the filling, blending and worldwide distribution of chemical solvents. For more than 15 years, we have offered a complete range of products and related services to our esteemed customers. Junyuan Petroleum Group ranked first among the China’s largest pentane manufacturers in 2021, with sales being 80 percent higher than that of China chemical solvent industry.