Isopentane
- 2-Methylbutane
- Ethyldimethylmethane
Isopentane | |
| |
| Formula | C5H12 |
| Structure | |
| Description | Clear, colorless to yellow liquid with a mild gasoline odor. |
| Uses | Solvent, manufacture of chlorinated derivatives, blowing agent for polystyrene. |
| Registry Numbers and Inventories. | |
| CAS | 78-78-4 |
| EC (EINECS/ELINCS) | 201-142-8 |
| EC Index Number | 601-006-00-1 |
| EC Class | Extremely flammable; Harmful; Repeated exposure may cause skin dryness or cracking; Vapours may cause drowsiness and dizziness; Dangerous for the Environment |
| EC Risk Phrase | R 12 51/53 65 66 67 |
| EC Safety Phrase | S 9 16 29 33 61 62 |
| RTECS | EK4430000 |
| RTECS class | Other |
| UN (DOT) | 1265 |
| Beilstein/Gmelin | 1730723 |
| Beilstein Reference | 4-01-00-00329 |
| Swiss Giftliste 1 | G-4404 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | C5H12 |
| Formula mass | 72.15 |
| Melting point, °C | -160 |
| Boiling point, °C | 28 |
| Vapor pressure, mmHg | 727 (25 C) |
| Vapor density (air=1) | 2.48 |
| Saturation Concentration | 0.8 % (21 C) |
| Evaporization number | 1 (butyl acetate=1) |
| Critical temperature | 187.8 |
| Critical pressure | 32.9 |
| Density | 0.620 g/cm3 (20 C) |
| Solubility in water | Insoluble |
| Viscosity | 0.233 cp at 20C |
| Surface tension | 13.72 g/s2 at 20 C |
| Refractive index | 1.3537 (20C) |
| Dipole moment | 0.29 D |
| Dielectric constant | 1.84 (20 C) |
| Partition coefficient, pKow | 2.30 |
| Thermal expansion | 0.001/K |
| Heat of fusion | 5.1 kJ/mol |
| Heat of vaporization | 26.1 kJ/mol |
| Heat of combustion | -3506 kJ/mol |
| Hazards and Protection. | |
| Storage | Keep away from sources of ignition. Store in a tightly closed container. Store in a dry area. Refrigerator/flammables. |
| WHMIS | B2 |
| Handling | Remove contaminated clothing and wash before reuse. Use spark-proof tools and explosion proof equipment. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Take precautionary measures against static discharges. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. |
| Protection | Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. |
| Respirators | Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. |
| Small spills/leaks | Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Remove all sources of ignition. Provide ventilation. |
| Disposal code | 1 |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Strong oxidizing agents. |
| Decomposition | Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. |
| Fire. | ||||
| Flash Point,°C | -57 | |||
| Autoignition, °C | 420 | |||
| Upper exp. limit, % | 8.3 | |||
| Lower exp. limit, % | 1.4 | |||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Water may be ineffective. | |||
| Fire potential | Very flammable liquid. Highly dangerous when exposed to heat or flame or oxidizers. | |||
| Hazards | Highly volatile liquid. Vapors may explode when mixed with air. Vapors can travel to a source of ignition and flash back. | |||
| Combustion products | Fire may produce irritating, corrosive and/or toxic gases. | |||
| NFPA | Health | 1 | ||
| Flammability | 4 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | 600 ppm ACGIH TWA |
| Poison_Class | 5 |
| Exposure effects | Mild central nervous system depression or excitation may occur after ingestion or vapor inhalation. |
| Ingestion | Material is a gas so ingestion is an ulikely route of exposure. Ingestion of large amounts may lead to a gas embolism. |
| Inhalation | May cause headache, nausea, vomiting dizziness, narcosis, suffocation, lower blood pressure, CNS depression. |
| Skin | May cause skin irritation. |
| Eyes | May cause eye irritation. |
First aid |
|
| Ingestion | Get medical aid immediately. |
| Inhalation | Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. |
| Skin | Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. |
| Eyes | Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. |
| Transport. | ||
| UN number | 1265 | |
| Response guide | 128 | |
| Hazard class | 3 | |
| Packing Group | I; II | |
| USCG CHRIS Code | IPT | |
| USCG Compatatibility Group | 31 Paraffins | |
| HS Code | 2901 10 90 | |
| IMO Chemical Code | 17 | |
| IMO Pollution Category | C | |
| IMO Hazard code | P | |