Possible impurities. The systematic name of aspirin is 2-ethanoylhydroxybenzoic acid. We usually make it by the esterification of 2-hydroxybenzoic acid (salicylic acid) using ethanoic anhydride and a catalyst such as concentrated sulphuric acid or phosphoric acid.
TxDMV Â» Motor Carriers Â» Oversize / Overweight Permits. Vehicles and loads that exceed legal size or weight limits need an oversize/overweight (OS/OW) permit and route from the TxDMV to travel on Texas roads.
Authorizes the operation of a vehicle transporting passengers (CDL or CLP only) S: Authorizes the operation of a school bus (CDL or CLP only) T: Authorizes towing two (double) or three (triple) trailers over a specified weight: X: Authorizes the operation of a combination of hazardous material and tank vehicle (CDL only)