759-73-9

Yellow-pink crystals or off-white powder. Sensitive to light.

N-NITROSO-N-ETHYLUREA(759-73-9) is highly reactive. Sensitive to moisture and light. Its stability in aqueous solutions is pH-dependent. Incompatible with water and nucleophilic reagents. Alkaline hydrolysis produces a highly explosive gas. .

Water soluble. Sensitive to moisture--stability in aqueous solutions depends on pH.

Tumorigen, carcinogen, neoplastigen; teratogen; poison; toxic.

ACUTE/CHRONIC HAZARDS: This compound is extremely unstable at high pH. It will decompose to extremely unstable decomposition products if acidic conditions are not maintained. When heated to decomposition it emits toxic fumes of nitrogen oxides. Decomposition products may be explosive.

Used as a chemical intermediate for dyes and pharmaceuticals; a polymerization inhibitor during the manufacture of vinyl monomers such as styrene; a precursor of diazoethane; accelerator for rubber vulcanization.

Flash point data for this chemical are not available; however, N-NITROSO-N-ETHYLUREA is probably combustible.

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard Class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

N-nitroso-N-ethylurea is highly reactive. Sensitive to moisture and light. Its stability in aqueous solutions is pH-dependent. Incompatible with water and nucleophilic reagents. Alkaline hydrolysis produces a highly explosive gas. This compound is extremely unstable at high pH. It will decompose to extremely unstable decomposition products if acidic conditions are not maintained. Nitrated organics range from slight to strong oxidizing agents. If mixed with reducing agents, including hydrides, sulfides and nitrides, they may begin a vigorous reaction. Reaction with

N-Nitroso-N-ethyl urea is a pale yellow, crystalline powder; freezing/melting point=103－104°C (decomposes). Hazard identification (based on NFPA-704 M Rating System): Health 2; flammability 1; reactivity 0?. Soluble in water; hydrolysis produces explosive gas.

Orange Paste

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.

A precursor of Diazoethane

Experimentally as mutagen; ethylating agent.

ChEBI: A member of the class of N-nitrosoureas that is urea in which one of the nitrogens is substituted by ethyl and nitroso groups.

DNA alkylating agent that is carcinogenic in many animal species. Induces benign and malignant tumors of numerous types, including the nervous tissue, stomach, esophagus, pancreas, respiratory tract, intestine, lymphoreticular tissues, skin, and kidney.

N-Nitroso-N-ethylurea is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.