- Symmetrical dimethylhydrazine
A colorless liquid with an ammonia-like odor.
There are no known commercial uses, although it was evaluated exptl as high energy rocket fuel.
Registry Numbers and Inventories.
EC Index Number
Tumorigen; Mutagen; Reproductive Effector
Swiss Giftliste 1
Boiling point, °C
Vapor pressure, mmHg
82 (25 C)
Vapor density (air=1)
Odor Threshold Odor threshold 1 to 10 ppm
Solubility in water
1.4209 (20 C)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard.
Miscible with water with much evolution of heat contact of dicyanofurazan, or its n-oxide (dicyanofuroxan), with hydrazine, mono or dimethylhydrazine. Is instantaneously explosive.
Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. Do not extinguish fire unless flow can be stopped. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Flammable. May ignite spontaneously when spread on combustible material.
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers.
None Tends to re-ignite unless diluted with much water.
CNS stimulation and seizures have occurred after absorption by any route.
Anorexia and vomiting are common symptoms.
Acute exposure to low concentrations of hydrazines may cause delayed death (days) and produce bronchial mucous destruction and pulmonary edema.
Hydrazine may cause strong skin irritation.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.
USCG CHRIS Code
Std. Transport #