N-бутил лакта химические свойства, назначение, производство
Химические свойства
Butyl lactate has a faintly sweet, pleasant odor with buttery, creamy, milky, sweet, mushroom undertones. Two optically
active and one racemic form of butyl lactate are known.
Вхождение
Reported found in cognac, cider and white wine.
Использование
n-Butyl lactate is used as a food and feed additive.
Подготовка
The racemic d-form is prepared by reacting zinc ammonium l-lactate with n-butyl alcohol in the presence of concentrated
H2SO4; the l-form is prepared by reacting zinc ammonium d-lactate with n-butyl alcohol in the presence of HCl; the racemic form
is prepared by several methods, one being from calcium or sodium lactate and n-butyl alcohol in benzene in the presence of H2SO4,
with subsequent azeotropic distillation of the mixture.
Методы производства
n-Butyl lactate may be prepared via esterification of lactic
acid and n-butyl alcohol.
Общее описание
A clear colorless liquid with a mild odor. Flash point 168°F. Less dense than water and insoluble in water. Vapors heavier than air. Used as a solvent, and to make other chemicals.
Реакции воздуха и воды
Insoluble in water.
Профиль реактивности
Butyl lactate is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Avoid contact with strong oxidizing agents and strong bases. Will not polymerize [USCG, 1999].
Опасность
Toxic. Upper respiratory tract irritant.
Угроза здоровью
VAPOR: Headache, coughing, possible sleepiness, nausea or vomiting, or dizziness may result. LIQUID: Irritating to skin and eyes.
Профиль безопасности
Poison by
intraperitoneal route. A skin irritant. Toxic
concentration in air for humans is about 4
ppm. Flammable when exposed to heat or
flame; can react with oxidizing materials. To
fight fire, use alcohol foam, foam, CO2, dry
chemical. When heated to decomposition it
emits acrid smoke and irritating fumes. See
also ESTERS, n-BUTYL ALCOHOL, and
LACTIC ACID.
Возможный контакт
Butyl lactate is a liquid. Molecular
weight 5 146.19; boiling point 5 170C @ 760 mmHg;
freezing/melting point 5 243C; flash point 5 71C(oc). Autoignition temperature 5 340382C. Hazard
identification (based on NFPA-704 M Rating System):
Health 1; flammability 2; reactivity 0 ?. Slightly soluble in
water.
Перевозки
A UN1993 Flammable liquids, n.o.s., Hazard
Class: 3; Labels: 3—Flammable liquid, Technical Name
Required.
Несовместимости
May form explosive mixture with air.
Incompatible with oxidizers (chlorates, nitrates, peroxides,
permanganates, perchlorates, chlorine, bromine, fluorine,
etc.); contact may cause fires or explosions. Keep away
from alkaline materials, strong bases, strong acids, oxoacids, epoxides
Утилизация отходов
Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal,
state, and local environmental regulations must be
observed.
N-бутил лакта препаратная продукция и сырье
сырьё
препарат