Isopropylcarbamat

Using a structure estimation method based on molecular connectivity indices(1), the Koc for isopropyl carbamate was estimated to be 18(SRC). According to a recommended classification scheme(2), this estimated Koc value suggests that isopropyl carbamate is expected to have very high mobility in soil(SRC).

An estimated BCF of 1.2 was calculated for isopropyl carbamate(SRC), using an estimated log Kow of 0.40(1,SRC) and a recommended regression-derived equation(2). According to a classification scheme(3), this BCF suggests that bioconcentration in aquatic organisms is low(SRC).

The Henry's Law constant for isopropyl carbamate is estimated as 7.0X10-8 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This value indicates that isopropyl carbamate will be essentially nonvolatile from water surfaces(2,SRC). Isopropyl carbamate's Henry's Law constant(1,SRC) indicates that volatilization from moist soil surfaces is not expected to occur(SRC).

ISOPROPYL CARBAMATE IS AMONG A GROUP OF CARBAMATES TESTED FOR MUTAGENIC PROPERTIES BY USING BACILLUS SUBTILIS. /SRP: WHERE HIGH CONCN OF CARBAMATES MARKEDLY LOWERED VIABILITY, THE MUTATION RATE APPEARED ELEVATED. HOWEVER, ANALYSIS OF MUTATION DATA SHOWED THAT NONE OF THE CARBAMATES TESTED WERE MUTAGENIC AT THE INDOLE LOCUS/.

The rate constant for the vapor-phase reaction of isopropyl carbamate with photochemically-produced hydroxyl radicals has been derived as 1.2X10-11 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1,SRC). This corresponds to an atmospheric half-life of about 1.3 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1,SRC). Purely aliphatic carbamates are expected to be resistant to hydrolysis under environmental conditions(2). A base-catalyzed second-order rate constant of 6.6X10-5 L/mol-sec(SRC) was estimated using a structure estimation method(2); this corresponds to half-lives of 3300 and 330 years at pH values of 7 and 8, respectively(2,SRC).

In air, isopropyl carbamate is expected to exist solely as a vapor in the ambient atmosphere based on an estimated vapor pressure of 0.17 mm Hg. Vapor-phase isopropyl carbamate will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals with an estimated half-life of 1.3 days. In soil, an estimated Koc of 18 suggests that isopropyl carbamate is expected to have very high mobility. Volatilization from moist soil surfaces is not expected based on an estimated Henry's Law constant of 7.0X10-8 atm-cu m/mole. In water, isopropyl carbamate is not expected to adsorb to suspended solids and sediment in the water column based on its estimated Koc. Volatilization from water surfaces is not expected given this compound's Henry's Law constant. The potential for bioconcentration in aquatic organisms is low based on an estimated BCF of 1.2. Purely aliphatic carbamates are expected to be resistant to hydrolysis under environmental conditions; hydrolysis half-lives of 3300 and 330 years at pH values of 7 and 8, respectively were estimated for isopropyl carbamate. (SRC)

For immediate first aid: Ensure that adequate decontamination has been carried out. If victim is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep victim quiet and maintain normal body temperature. Obtain medical attention. /Esters and related compounds/

For basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... Monitor for shock and treat if necessary ... For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . /Esters and related compounds/