| | tert-Butylamine Basic information |
| | tert-Butylamine Chemical Properties |
| Melting point | -67 °C (lit.) | | Boiling point | 46 °C (lit.) | | density | 0.696 g/mL at 25 °C (lit.) | | vapor density | 2.5 (vs air) | | vapor pressure | 5.7 psi ( 20 °C) | | refractive index | n20/D 1.377(lit.) | | Fp | −36.4 °F | | storage temp. | Store below +30°C. | | solubility | water: miscible1000g/L at 25°C | | form | Liquid | | pka | 10.68(at 25℃) | | color | Clear | | PH | 12 (100g/l, H2O, 20℃) | | Odor | Like ammonia. | | Odor Threshold | 0.17ppm | | explosive limit | 1.5-9.2%(V) | | Water Solubility | MISCIBLE | | Sensitive | Air Sensitive | | Merck | 14,1545 | | BRN | 605267 | | Stability: | Stable. Incompatible with strong acids, strong oxidizing agents. Highly flammable. | | CAS DataBase Reference | 75-64-9(CAS DataBase Reference) | | NIST Chemistry Reference | 2-Propanamine, 2-methyl-(75-64-9) | | EPA Substance Registry System | tert-Butylamine (75-64-9) |
| | tert-Butylamine Usage And Synthesis |
| Chemical Properties | tert-Butylamine is a colorless liquid with a typical amine-like odor. It is one of the four isomeric amines of butane, the others being n-butylamine, sec-butylamine and isobutylamine. Butylamines are highly flammable, colorless liquids (n-turns yellow on standing) with ammoniacal or fishlike odors. tert-Butylamine is used in the preparation of insecticides, pharmaceuticals, oil additives, and rubber accelerators. | | Uses | tert-butylamine is used as a precursor for the preparation of rubber accelerators, pharmaceuticals and dyes. It is employed in synthesis of N-tert-butyl-acetamide, isoquinolines, pyridines, decumbenine, sulfontes, sulfonamides and methyl beta-ketophosphonate. It is also used in the study the effect of amines in influencing atmospheric sulfuric acid - water nucleation, hydroamination of terminal alkynes and measuring the surface acidity of solid catalyst. It acts as an indicator molecule in the study of NMR -based pH determination method. | | Preparation | tert-Butylamine is produced commercially by direct amination of isobutylene using zeolite catalysts:
NH3 + CH2=C(CH3)2 → H2NC(CH3)3
The Ritter reaction of isobutene with hydrogen cyanide is not useful because it produces too much waste.
(CH3)2C=CH2 + HCN + H2O → (CH3)3CNHCHO
(CH3)3CNHCHO + H2O → (CH3)3CNH2 + HCO2H
In the laboratory, it can be prepared by the hydrogenolysis of 2,2-dimethylethylenimine, or via tert-butylphthalimide. | | Production Methods | tert-Butylamine is manufactured by reacting isobutylamine
with sulfuric acid followed by cyanide to tert-butylformamide.
Hydrolysis yields t-butylamine. It is used as a solvent
and in organic syntheses. | | Definition | ChEBI: Tert-butylamine is a primary aliphatic amine that is ethylamine substituted by two methyl groups at position 1. It is a conjugate base of a tert-butylammonium. | | General Description | Tert-butylamine appears as a clear colorless liquid with an ammonia-like odor. Flash point 70°F. Less dense (at 6.2 lb / gal) than water. Vapors heavier than air. Toxic oxides of nitrogen produced during combustion. | | Air & Water Reactions | Highly flammable. May be sensitive to air . Soluble in water. | | Reactivity Profile | tert-Butylamine neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides. Undergoes highly exothermic reaction with 2,2-dibromo-1,3-dimethylcyclopropanoic acid [J. Chem. Soc., 1, 1979, 2324]. | | Hazard | Skin irritant. Flammable, dangerous fire
risk.
| | Health Hazard | Inhalation causes irritation of nose, mouth, and lungs. Ingestion causes irritation of mouth and stomach. Contact with liquid causes severe irritation of eyes and moderate irritation of skin. | | Fire Hazard | Special Hazards of Combustion Products: Toxic oxides of nitrogen may form in fire. | | Safety Profile | Poison by ingestion.
Moderately toxic to humans by inhalation. A
corrosive liquid. See also n-BUTYLAMINE
and AMINES. Very dangerous fire hazard
when exposed to heat or flame. Very
exothermic reaction with 2,2-dibromo-l,3
dimethylcyclopropanoic acid. To fight fire,
use alcohol foam. When heated to
decomposition it emits toxic fumes of NOx. | | Potential Exposure | Alert: (n-isomer): Possible risk of
forming tumors, suspected of causing genetic defects, suspected reprotoxic hazard, Primary irritant (w/o allergic
reaction), (sec-isomer): Drug. n-Butylamine is used in
pharmaceuticals; dyestuffs, rubber, chemicals, emulsifying
agents; photography, desizing agents for textiles; pesticides, and synthetic agents. sec-Butylamine is used as a
fungistate. tert-Butylamine is used as a chemical intermediate in the production of tert-Butylaminoethyl methacrylate
(a lube oil additive); as an intermediate in the production
of rubber and in rust preventatives and emulsion deterrents
in petroleum products. It is used in the manufacture of
several drugs | | Shipping | UN1125 n-Butylamine, Hazard Class: 3; Labels:
3—Flammable liquid, 8—Corrosive material. UN2014
Isobutylamine, Hazard Class: 3; Labels: 3—Flammable
liquid, 8—Corrosive material | | Purification Methods | Dry it with KOH or LiAlH4, and/or distil it from CaH2 or BaO. [Beilstein 4 IV 657.] | | Incompatibilities | May form explosive mixture with air.
May accumulate static electrical charges, and may causeignition of its vapors. n-Butylamine is a weak base; reacts
with strong oxidizers and acids, causing fire and explosion
hazard. Incompatible with organic anhydrides; isocyanates,
vinyl acetate; acrylates, substituted allyls; alkylene oxides;
epichlorohydrin, ketones, aldehydes, alcohols, glycols, phenols, cresols, caprolactum solution. Attacks some metals in
presence of moisture. The tert-isomer will attack some
forms of plastics | | Waste Disposal | Use a licensed professional
waste disposal service to dispose of this material. Dissolve
or mix the material with a combustible solvent and burn in
a chemical incinerator equipped with an afterburner andscrubber. All federal, state, and local environmental regulations must be observed. |
| | tert-Butylamine Preparation Products And Raw materials |
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