Butanone and -butanone

[2-Butanone] CAS[78-93-3] UN1193
= Methyl ethyl ketone
Chemical formula; C2H5COCH3
Chemical characteristics; Ketones. 1-octanol/water partition coefficient (log Kow) 0.29. (ref. ID; 990)
Test organisms;
Protozoa: Tetrahymena pyriformis (ref. ID; 990)

[3,3-Dimethyl-2-butanone] CAS[75-97-8] UN1224
= Pinacoline, Pinacolone
Chemical formula; CH3COC(CH3)2CH3
Mode of toxic action; Narcotic. (ref. ID; 3327)
Test organisms;
Protozoa: Tetrahymena pyriformis (ref. ID; 3327)