Special Provision: A

Titanium powder, dry

Thiophosphoryl chloride

Thioglycolic acid

Tetramethylsilane

Sulfuric acid with not more than 51% acid

Sulfuric acid, spent

Sulfuric acid with more than 51 percent acid

Sulfuric acid, fuming with less than 30 percent free sulfur trioxide

Sulfur chlorides

Strontium phosphide