Diisobutylamin

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:

Use alcohol-resistant foam, water, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.

Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower for at least 15 minutes. Refer immediately for medical attention .

Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.

Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

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.

General First Aid:

Alcohol foam. Water may be ineffective.

To fight fire, use alcohol foam, carbon dioxide, dry chemical.

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Remove all ignition sources. Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Wash away remainder with plenty of water.

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:

Immediate precautionary measure

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 640(SRC) from an estimated log Kow of 2.63(2) and a regression derived equation(3) indicates that diisobutylamine is expected to have low mobility in soil(SRC). A pKa value of 10.91(4) indicates that the protonated form of diisobutylamine will be the dominant species in moist soil surfaces and cations generally adsorb strongly to soils. Volatilization of diisobutylamine from moist soil surfaces is not expected to be an important fate process since the cation will not volatilize. Diisobutylamine may volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 7.27 mm Hg at 25 °C(5). 63 to 87% of the theoretical BOD was achieved for diisobutylamine using activated sludges over a 4 week incubation period(6), which suggests that biodegradation in soil is expected to be important(SRC).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 640(SRC) from an estimated log Kow of 2.63(2) and a regression derived equation(3) indicates that diisobutylamine is expected to adsorb to suspended solids and sediment in water(SRC). A pKa value of 10.91(4) indicates that the protonated form of diisobutylamine will be the predominant species in water. Volatilization from water surfaces is not expected to be an important fate process(SRC) since the protonated form will not volatilize. According to a classification scheme(5), an estimated BCF of 21(SRC), from its log Kow(2) and a regression-derived equation(6), suggests the potential for bioconcentration in aquatic organisms is low(SRC). 63 to 87% of the theoretical BOD was achieved for diisobutylamine using activated sludges over a 4 week incubation period(7), which suggests that biodegradation in water is expected to be important(SRC).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), diisobutylamine, which has a vapor pressure of 7.27 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase diisobutylamine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 4 hours(SRC), from its rate constant of 9X10-11 cu cm/molecule-sec at 25 °C(3). Diisobutylamine is not expected to directly photolyze due to the lack of absorption in the environmental UV spectrum(SRC).

Cough. Sore throat. Burning sensation behind the breastbone. Shortness of breath. Laboured breathing.

Redness. Pain. Serious skin burns.

Redness. Pain. Severe burns. Blurred vision.

Burns in mouth and throat. Burning sensation. Abdominal pain. Vomiting. Shock or collapse.

The Koc of diisobutylamine was estimated as 640(SRC), using an estimated log Kow of 2.63(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that diisobutylamine is expected to have low mobility in soil(SRC). The pKa of diisobutylamine is 10.91(4), indicating that the protonated form will be the predominant species in moist soils and cations are expected to adsorb strongly to soil surfaces.

An estimated BCF of 21 was calculated for diisobutylamine(SRC), using an estimated log Kow of 2.63(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

With a pKa of 10.91(1), diisobutylamine will exist predominantly in its protonated form in the environment and the protonated form of diisobutylamine will not volatilize from water or moist soil surfaces(2). Diisobutylamine may volatilize from dry soil surfaces(SRC) based on its vapor pressure of 7.27 mm Hg at 25 °C(3).

MORTALITY RATE OF 75 PPM INHALED BY RATS FOR 4 HR WAS 4/6; NO DEATHS OCCURRED WHEN INHALING SATURATED VAPOR FOR 50 MIN. /FROM TABLE/

Diisobutylamine was found to be negative when tested for mutagenicity using the Salmonella/ microsome preincubation assay, using the standard protocol approved by the National Toxicology Program (NTP). Diisobutylamine was tested in as many as 5 Salmonella typhimurium strains (TA1535, TA1537, TA97, TA98, and TA100) in the presence and absence of rat and hamster liver S-9, at doses of 0.100, 0.333, 1.000, 3.333, and 10.000 mg/plate. The highest ineffective dose tested in any S. typhimurium strain was 10.000 mg/plate.