2-Methylbutane, Isopentane, iso-Pentane, CAS#78-78-4

2-Methylbutane, Synonyms: iso-Pentane, Isopentane, CAS# 78-78-4, chemical formula C₅H₁₂

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2-Methylbutane, Synonyms: iso-Pentane, Isopentane, CAS# 78-78-4, chemical formula C₅H₁₂, Molar Mass: 72.15 g/mol, Chemical Formula: C₅H₁₂, EC Number: 201-142-8
Isopentane, also called methylbutane or 2-methylbutane, is a branched-chain saturated hydrocarbon with five carbon atoms, with formula C₅H₁₂ or CH(CH₃). Isopentane is an extremely volatile and extremely flammable liquid at room temperature and pressure. It is also the least dense liquid at standard conditions. The normal boiling point is just a few degrees above room temperature and isopentane will readily boil and evaporate away on a warm day.
Boiling point: 81.86°F (27.70°C)
Density: 0.62 g/cm³
Chemical formula: C5H12
Average Molar mass: 72.15 g/mol
Classification: Alkane

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Key Specifications Table

CAS #EC NumberHill FormulaChemical FormulaMolar Mass
78-78-4201-142-8C₅H₁₂C₅H₁₂72.15 g/mol
Description
Catalogue Number106056
Synonymsiso-Pentane, Isopentane
Description2-Methylbutane
Product Information
CAS number78-78-4
EC index number601-006-00-1
EC number201-142-8
Hill FormulaC₅H₁₂
Chemical formulaC₅H₁₂
Molar Mass72.15 g/mol
HS Code2901 10 00
Applications
Application2-Methylbutane, CAS 78-78-4, chemical formula C₅H₁₂.
Physicochemical Information
Boiling point28 °C (1013 hPa)
Density0.62 g/cm3 (20 °C)
Explosion limit1.3 – 7.6 %(V)
Flash point-57 °C
Ignition temperature420 °C
Melting Point-160 °C
Vapor pressure800 hPa (20 °C)
Solubility0.048 g/l
Hazard Statement(s)H224: Extremely flammable liquid and vapour.
H304: May be fatal if swallowed and enters airways.
H336: May cause drowsiness or dizziness.
H411: Toxic to aquatic life with long lasting effects.
EUH066: Repeated exposure may cause skin dryness or cracking.
Precautionary Statement(s)P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233: Keep container tightly closed.
P240: Ground/bond container and receiving equipment.
P273: Avoid release to the environment.
P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor.
P331: Do NOT induce vomiting.
P403 + P235: Store in a well-ventilated place. Keep cool.
Signal WordDanger
RTECSEK4430000
Storage class3 Flammable liquids
WGKWGK 2 obviously hazardous to water
Disposal1
Strongly contaminated halogen-free organic solvents: container A.
Safety Information
Categories of dangerextremely flammable, harmful, dangerous for the environment
R PhraseR 12-65-66-67-51/53
Extremely flammable.Harmful: may cause lung damage if swallowed.Repeated exposure may cause skin dryness or cracking.Vapours may cause drowsiness and dizziness.Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S PhraseS 9-16-29-33-61-62
Keep container in a well-ventilated place.Keep away from sources of ignition – No smoking.Do not empty into drains.Take precautionary measures against static discharges.Avoid release to the environment. Refer to special instructions/ Safety data sheets.If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label.
Storage and Shipping Information
StorageStore at +2°C to +30°C.
Transport Information
Declaration (railroad and road) ADR, RIDUN 1265 , 3, I
Declaration (transport by air) IATA-DGRUN 1265 , 3, I
Declaration (transport by sea) IMDG-CodeUN 1265 , 3, I
Specifications
Purity (GC)≥ 99.8 %
Evaporation residue≤ 0.0005 %
Water≤ 0.005 %
Colour≤ 10 Hazen
Acidity≤ 0.0002 meq/g
Alkalinity≤ 0.0002 meq/g
Fluorescence (as quinine at 254 nm)≤ 1.0 ppb
Fluorescence (as quinine at 365 nm)≤ 1.0 ppb
Transmission (at 190 nm)≥ 50 %
Transmission (at 200 nm)≥ 65 %
Transmission (at 210 nm)≥ 85 %
Transmission (at 215 nm)≥ 90 %
Transmission (from 240 nm)≥ 98 %
Absorbance (at 190 nm)≤ 0.30
Absorbance (at 200 nm)≤ 0.19
Absorbance (at 210 nm)≤ 0.07
Absorbance (at 215 nm)≤ 0.05
Absorbance (from 240 nm)≤ 0.01