HYDROXYUREA

PHYSICAL DESCRIPTION: Odorless or almost odorless white to off-white crystalline solid. Tasteless. (NTP, 1992)

none

Water soluble.

Flash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)

SYMPTOMS: Symptoms of exposure to this compound include bone marrow suppression including megaloblastic changes, pulmonary edema and neurological reactions such as headache and dizziness. Other neurological reactions include drowsiness, disorientation, hallucinations and convulsions. Impairment of renal function may occur. Other symptoms include megaloblastic anemia, leukopenia, thrombocytopenia, gastrointestinal disturbances, mild dermatological reactions, stomatitis and alopecia. Exposure may also cause maculopapular rash, facial erythema, dysuria and fever. Symptoms of exposure to this type of compound include anorexia, nausea, vomiting, allergic reactions including skin rashes, erythema and pruritus, hypotension, malaise, weakness, anaphylaxis, vesication or irritation of the skin and mucous membranes and possible thrombophlebitis (when injected). Prolonged exposure to this type of compound may cause bone marrow depression, anemia, bleeding, immunosuppression, mouth ulcers, esophagitis, abdominal pain, hemorrhage, diarrhea, intestinal ulceration and perforation, hyperuricemia, acute renal failure due to uric acid nephropathy, hyperphosphatemia, pigmentation of the skin and nails and jaundice.

ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits toxic fumes of NOx. (NTP, 1992)

An amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

• Alcohols and Polyols
• Amides and Imides

Use caution: Liquids with this reactive group classification have been known to react with the absorbent listed below.

• Cellulose-Based Absorbents

Excerpt from 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)

SMALL SPILLS AND LEAKAGE: If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

STORAGE PRECAUTIONS: You should store this chemical under refrigerated temperatures, and protect it from moisture. (NTP, 1992)

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

No information available.

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

• BIOSUPPRESSIN
• BIOSUPRESSIN
• CARBAMOHYDROXAMIC ACID
• CARBAMOHYDROXIMIC ACID
• CARBAMOHYDROXYAMIC ACID
• CARBAMOYL OXIME
• CARBAMYL HYDROXAMATE
• HIDRIX
• HU
• HYDREA
• HYDREIA
• HYDROXY UREA (D4)
• HYDROXYCARBAMIDE
• HYDROXYCARBAMINE
• HYDROXYLAMINE, N-(AMINOCARBONYL)-
• HYDROXYLUREA
• HYDROXYUREA
• 1-HYDROXYUREA
• HYDURA
• HYDUREA
• LITALER
• LITALIR
• N-(AMINOCARBONYL)HYDROXYLAMINE
• N-CARBAMOYLHYDROXYLAMINE
• N-HYDROXYUREA
• NCI-C04831
• NSC 32065
• ONCO-CARBIDE
• OXYUREA
• SK 22591
• SQ 1089
• WR 83799