Oldcastle 0.8 cu. ft. 7/8 in. Drainage Rock is medium, uniformly sized rock that can be used to create stable drainage bases. It is an all-purpose gravel that can also be used for other landscaping applications. The natural, gray brick chips are nearly maintenance free. Uniform 7/8 in.
Dimethyl sulfoxide (DMSO), a by-product of the wood industry, has been in use as a commercial solvent since 1953. It is also one of the most studied but least understood pharmaceutical agents of our time--at least in the United States.
DMSO is a polar aprotic solvent and is less toxic than other members of this class, such as dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone, and HMPA. DMSO is frequently used as a solvent for chemical reactions involving salts, most notably Finkelstein reactions and other nucleophilic substitutions.he sodium derivative of DMSO formed in this way is referred to as  dimsyl sodium . It is a base, e.g., for the deprotonation of ketones to form sodium enolates, phosphonium salts to form Wittig reagents, and formamidinium salts to form diaminocarbenes. It is also a potent nucleophile.