Methyl alcohol
- Methanol
- Wood alcohol
- Columbian spirits
- Carbinol
Methyl alcohol | |
| |
| Formula | CH3OH |
| Structure | |
| Description | Colorless liquid, with a mild, characteristic alcohol odor when pure. |
| Uses | Industrial solvent, raw material for formaldehyde, methyl esters, organic & inorg acids, antifreeze, fuel, extractant for animal & vegetable oils, to denature ethanol, manufacture pharmaceuticals, solvent in manufacture of streptomycin, vitamins, hormones, polymers, plastics. |
| Registry Numbers and Inventories. | |
| CAS | 67-56-1 |
| EC (EINECS/ELINCS) | 200-659-6 |
| EC Index Number | 603-001-00-X |
| EC Class | Highly flammable; Toxic |
| EC Risk Phrase | R 11 23/24/25 39/23/24/25 |
| EC Safety Phrase | S 7 16 24 45 |
| RTECS | PC1400000 |
| RTECS class | Drug; Mutagen; Reproductive Effector; Human Data; Primary Irritant |
| UN (DOT) | 1230 |
| Merck | 13,5984 |
| Beilstein/Gmelin | 1098229 |
| Beilstein Reference | 4-01-00-01227 |
| RCRA | U154 |
| EPA OPP | 53801 |
| Swiss Giftliste 1 | G-2063 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | CH4O |
| Formula mass | 32.04 |
| Melting point, °C | -98 |
| Boiling point, °C | 64.6 |
| Vapor pressure, mmHg | 127 (25 C) |
| Vapor density (air=1) | 1.11 |
| Saturation Concentration | 12.6% at 20 C |
| Evaporization number | 5.9 (butyl acetate=1) |
| Critical temperature | 240.0 |
| Critical pressure | 78.5 |
| Density | 0.7918 g/cm3 (20 C) |
| Solubility in water | Miscible |
| Viscosity | 0.614 MPa sec |
| Surface tension | 22.61 g/s2 (at 20 C) |
| Refractive index | 1.33066 (20 C) |
| Dipole moment | 1.7 D (20 C) |
| Dielectric constant | 32.6 (25 C) |
| Partition coefficient, pKow | -0.77 |
| Heat of fusion | 3.2 kJ/mol |
| Heat of vaporization | 39.2 kJ/mol |
| Heat of combustion | -723 kJ/mol |
| Hazards and Protection. | |
| Storage | Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area. |
| WHMIS | B2 D1B D2A D2B |
| Handling | Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood. |
| 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. Remove all sources of ignition. |
| Disposal code | 1 |
| Stability | Stable at room temperature in closed containers under normal storage and handling conditions. |
| Incompatibilities | Reducing agents, acid chlorides, active metals, alkali metals, liquid chlorine, magnesium, sodium hypochlorite, potassium, chloroform, acids (mineral, oxidizing, e.g. chromic acid, hypochlorous acid, nitric acid, sulfuric acid), oxidizing agents (strong, e.g. bromine, hydrogen peroxide, nitrogen dioxide, potassium nitrate), acid anhydrides, cyanuric chloride, diethyl zinc, perchloric acid, potassium-tert-butoxide. |
| Decomposition | Carbon monoxide, carbon dioxide, formaldehyde. |
| Fire. | ||||
| Flash Point,°C | 11 | |||
| Autoignition, °C | 455 | |||
| Upper exp. limit, % | 36 | |||
| Lower exp. limit, % | 6.0 | |||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam. | |||
| Fire potential | Flammable liquid and vapor. Will burn, may be ignited by heat, sparks and flames. | |||
| Hazards | Flammable vapor may spread away from spill. Container may explode in heat of fire. Flashback upon vapor trail may occur. | |||
| Combustion products | Fire will produce irritating, corrosive and/or toxic gases. | |||
| NFPA | Health | 1 | ||
| Flammability | 3 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | OSHA PEL: TWA 200 ppm (260 mg/m3) NIOSH REL: TWA 200 ppm (260 mg/m3) ST 250 ppm (325 mg/m3) skin NIOSH IDLH: 6000 ppm |
| Poison_Class | 3 |
| Exposure effects | Prolonged or repeated skin contact may cause dermatitis. Marked impairment of vision has been reported. |
| Ingestion | Toxic. Symptoms parallel inhalation. Can intoxicate and cause blindness. Usual fatal dose: 100-125 milliliters. |
| Inhalation | A slight irritant to the mucous membranes. Toxic effects exerted upon nervous system, particularly the optic nerve. Once absorbed into the body, it is very slowly eliminated. Symptoms of overexposure may include headache, drowsiness, nausea, vomiting, blurred vision, blindness, coma, and death. A person may get better but then worse again up to 30 hours later. |
| Skin | Methyl alcohol is a defatting agent and may cause skin to become dry and cracked. Skin absorption can occur; symptoms may parallel inhalation exposure. |
| Eyes | Irritant. Continued exposure may cause eye lesions. |
First aid |
|
| Ingestion | If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Induce vomiting by giving one teaspoon of Syrup of Ipecac. |
| 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 | 1230 | |
| Response guide | 131 | |
| Hazard class | 3 | |
| Packing Group | II | |
| USCG CHRIS Code | MAL | |
| USCG Compatatibility Group | 20 Alcohols, Glycols | |
| HS Code | 2905 11 00 | |
| Std. Transport # | 4907828 | |
| IMO Chemical Code | 18 | |
| IMO Pollution Category | D | |