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Chemical Datasheet
Chemical Identifiers
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UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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data unavailable
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| NIOSH Pocket Guide |
International Chem Safety Card |
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NFPA 704
data unavailable
General Description
PHYSICAL DESCRIPTION: Odorless white crystalline powder. Bitter taste. Solutions in water are neutral or slightly acidic. (NTP, 1992)
Hazards
Reactivity Alerts
none
Air & Water Reactions
Insoluble in water.
Fire Hazard
Flash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)
Health Hazard
SYMPTOMS: Symptoms of exposure upon ingestion of this compound may include coma, blood pressure decrease, regional or general arteriolar constriction, dyspnea, cyanosis, respiratory depression, nausea, vomiting and allergic skin dermatitis. Other symptoms may include slight alterations of binocular vision and slight tendency to euphoria. Exposure to this compound may also cause drowsiness, diarrhea, paresthesia, weakness, headache, excitement, dizziness, ataxia, disturbances of vision, tachycardia, erythema multiform and, occasionally, skin rashes, angioneurotic edema, bronchospasm, anuria, agranulocytosis, eosinophilia, leucopenia and aplastic anemia. Other symptoms may include purpura, hypotension, cardiac arrhythmias and, occasionally, urticaria and thrombocytopenia. Exposure to this compound may result in acute intermittent porphyria, allergic or idiosyncratic reactions, slurred speech, vertigo, overstimulation, fast EEG activity, palpitations, arrhythmia, transient ECG changes, syncope, hypotensive crises, petechiae, ecchymoses, peripheral edema, adenopathy, fever, lethargy, stupor, shock, vasomotor and respiratory collapse, death, increased risk of congenital malformations and, rarely, hyperpyrexia, chills, oliguria, exfoliative dermatitis, anaphylaxis, stomatitis, proctitis, Stevens-Johnson syndrome and bullous dermatitis. Central nervous system depression may also occur. Other symptoms may include blood dyscrasias and hypothermia. Exposure to this compound also causes sleepiness, unsteadiness, mental confusion, slow and shallow respiration, flaccid muscles, hyperthermia, aspiration pneumonia, signs of lung consolidation, cerebral edema, laryngospasm, hangover emotional lability or depression, irritability, poor judgment, behavioral disturbances, vascular collapse, cardiac arrest and nonthrombocytopenic purpura. Other symptoms may include erythematous rash, angioedema, impaired stance and heart failure. In addition, areflexia, lack of response to sensory stimuli, excess oronasal secretions, relaxation of the pharyngeal wall muscular relaxation, pruritic eruptions, anaphylactoid reaction, fatal allergic collapse, fixed and unresponsive pupils, atelectasis and epileptiform seizures may occur.
ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits toxic fumes of nitrogen oxides. (NTP, 1992)
Reactivity Profile
MEPROBAMATE is a carbamate ester. Carbamates are chemically similar to, but more reactive than amides. Like amides they form polymers such as polyurethane resins. Carbamates are incompatible with strong acids and bases, and especially incompatible with strong reducing agents such as hydrides. Flammable gaseous hydrogen is produced by the combination of active metals or nitrides with carbamates. Strongly oxidizing acids, peroxides, and hydroperoxides are incompatible with carbamates.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents
No information available.
Response Recommendations
Isolation and Evacuation
No information available.
Firefighting
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
Non-Fire Response
SMALL SPILLS AND LEAKAGE: Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with 60-70% ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with 60-70% ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing 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 material under ambient temperatures. This compound is a Schedule IV DEA Controlled Substance and is to be stored according to State and Federal Regulations. Refer to Code of Federal Regulations Title 21 Part 1300 to End. (NTP, 1992)
Protective Clothing
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)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
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. If symptoms (such as redness or irritation) develop, immediately transport the victim to a hospital.
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)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
219 to 223°F
(NTP, 1992)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight:
218.25
(NTP, 1992)
Water Solubility:
less than 1 mg/mL
at 68°F
(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
No PAC information available.
Regulatory Information
EPA Consolidated List of Lists
No regulatory information available.
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names