TBAc™ Solvent (Tertiary Butyl Acetate)
CAS No. 540-88-5
Description
TBAc solvent is Lyondell Chemical Company’s brand of tert-butyl acetate, a VOC (volatile organic compound)-exempt, non-HAP (hazardous air pollutant), urethane-grade solvent with low toxicity. It has a characteristic ester odor and is soluble in water to the extent of 0.8% at 23°C. It has excellent solvency for a variety of substances including nitrocellulose, acrylic, alkyd, polyester and urethane resins. TBAc solvent is a substitute for a variety of HAP and VOC solvents including toluene, xylene, esters, ketones and hydrocarbons.
Product Identification
| Chemical Name | acetic acid, 1,1-dimethylethyl ester |
| Chemical Family | aliphatic ester |
| Other Names | acetic acid, tert-butyl ester |
| 1,1-dimethylethyl acetate | |
| tertiary-butyl alcohol, acetate | |
| 2-acetoxy-2-methylpropane | |
| Chemical Formula | C6H12O2 |
Product Specifications*
| Property | Specifications | Test Method |
|---|---|---|
| Acidity, wt. % as acetic acid, max. | 0.01 | ASTM D-1613 |
| Water, wt. %, max. | 0.05 | ASTM E-203 |
| Color, APHA, max. | 10 | ASTM E-1209 |
| GC purity, wt. %, min. | 99.5 | Internal Method |
Typical Properties
| Autoignition temperature | 518°C |
| Density @ 25°C | 0.8599 g/ml (7.18 lbs./gal) |
| Evaporation rate (BuAc = 100) | 280 |
| Flammability limits (lower/upper vol. %) | 1.26/6.88 |
| Flash Point (Tag Closed Cup) | 4.4°C (40°F) |
| Solubility by weight in water @ 23°C | 0.8% |
| Maximum incremental reactivity (MIR) | 0.20g ozone/gTBAc |
| Dielectric constant (DIC @20°C, cyclohexane) | 1.94 |
| Solubility parameter (total Hansen) | 7.7 |
| Surface tension @ 20°C (68°F) | 22.4 dynes/cm |
| Electrical resistivity | 23.8 megaOhms |
| Viscosity @ 20°C (68°F) | <1.2 centistokes |
| Vapor pressure @ 20°C | 31 mm Hg |
| Boiling point @ 760mm Hg | 98°C |