1-Methylhydrazine
- Monomethylhydrazine
- MMH
- Methylhydrazine
- Hydrazomethane
1-Methylhydrazine | |
| |
| Formula | CH3NHNH2 |
| Structure | |
| Description | A colorless liquid with an ammonia-like odor. |
| Uses | Solvent. |
| Registry Numbers and Inventories. | |
| CAS | 60-34-4 |
| EC (EINECS/ELINCS) | 200-471-4 |
| RTECS | MV5600000 |
| RTECS class | Tumorigen; Mutagen; Reproductive Effector |
| UN (DOT) | 1244 |
| Merck | 12,6160 |
| Beilstein/Gmelin | 635645 |
| Beilstein Reference | 4-04-00-03322 |
| RCRA | P068 |
| Swiss Giftliste 1 | G-2465 |
| Canada DSL/NDSL | NDSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| Japan ENCS (MITI) | Listed |
| Properties. | |
| Formula | CH6N2 |
| Formula mass | 46.07 |
| Boiling point, °C | 87.8 |
| Vapor pressure, mmHg | 64 (25 C) |
| Vapor density (air=1) | 1.6 |
| Critical temperature | 312 |
| Critical pressure | 81.3 |
| Density | 0.8632 g/cm3 (30 C) |
| Solubility in water | Miscible |
| Surface tension | 34.3 g/s2 |
| Refractive index | 1.433 (20 C) |
| pKa/pKb | 4.97 (pKb) |
| Partition coefficient, pKow | -1.05 |
| Heat of fusion | 10.4 kJ/mol |
| Heat of vaporization | 36.1 kJ/mol |
| Heat of combustion | -1170 kJ/mol |
| Hazards and Protection. | |
| Storage | Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Keep containers tightly closed. |
| Handling | Use only in a well ventilated area. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. 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. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. Use water spray to reduce vapors or divert vapor cloud drift. |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Oxidizing agents - oxygen - peroxides. |
| Decomposition | Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen. |
| Fire. | ||||
| Flash Point,°C | 21 | |||
| Autoignition, °C | 194 | |||
| Upper exp. limit, % | 92 | |||
| Lower exp. limit, % | 2.5 | |||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Liquid will float and may reignite on the surface of water. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Water may be ineffective. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out. | |||
| Fire potential | HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. | |||
| Hazards | Extremely flammable; ignites spontaneously under almost all normal temperature conditions. The vapor is heavier than air; thus it may accumulate sufficiently to flash back. Methylhydrazine fires produce irritating nitrogen oxides. Ignites spontaneously in air when in contact with porous materials (e.g., earth, asbestos, wood, or cloth). Also ignites spontaneously on contact with strong oxidizing agents (e.g., fluorine, chlorine trifluoride, fuming nitric acid, and nitrogen tetroxide). Heat or flame should be avoided because chemical is extremely flammable and explosive. | |||
| Combustion products | Toxic oxides of nitrogen are produced during combustion of this material. | |||
| NFPA | Health | 4 | ||
| Flammability | 3 | |||
| Reactivity | 2 | |||
| Health. | |
| Exposure limit(s) | OSHA PEL: C 0.2 ppm (0.35 mg/m3) skin NIOSH REL: Ca C 0.04 ppm (0.08 mg/m3) 2-hr See Appendix A NIOSH IDLH: Potential occupational carcinogen 20 ppm |
| Carcinogin | G-A3, CP65 |
| Poison_Class | 2 |
| Exposure effects | Anoxia, cyanosis, or fever may occur. Respiratory arrest may occur secondary to seizure activity or coma. CNS stimulation, excitability, tremors, convulsions, and coma have occurred. Contradictory results have been obtained for induction of malformations in mice. Sperm head abnormalities were reversibly induced in rats. Methemoglobin inducers may be especially hazardous to the fetus. |
| Ingestion | May be fatal if swallowed. May cause digestive tract disturbances. |
| Inhalation | May be fatal if inhaled. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Exposure may cause coughing, breathing difficulty, and possible pulmonary edema. |
| Skin | May be fatal if absorbed through the skin. May cause skin burns. |
| Eyes | Causes eye irritation and possible burns. |
First aid |
|
| Ingestion | If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. |
| Inhalation | Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask. |
| Skin | Get medical aid immediately. 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 | 1244 | |
| Response guide | 131 | |
| Hazard class | 6.1 | |
| PRTC | T | |
| Packing Group | I | |
| USCG CHRIS Code | MHZ | |
| Std. Transport # | 4927011 | |