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| orcinol |
a white crystalline compound that turns red on exposure to air, used as a reagent for certain carbohydrates. |
| oxalic acid |
a poisonous, colorless acid used as a cleansing agent, laundry bleach, and laboratory reagent. |
| potassium nitrate |
a colorless crystalline compound used in explosives, preservatives, and fertilizers and as a chemical reagent. |
| selenious acid |
a poisonous water-soluble powder used as a reagent. |
| sulfurous acid |
an acid with a suffocating aroma of sulfur, occurring in solution with water or in salt form and used as a bleach, disinfectant, and reagent. |
| titrate |
to determine the amount of a substance in (a solution) by adding a standard liquid reagent of known concentration and measuring the volume required to produce a specified reaction such as a change in color or form. |
| toluidine |
any of three isomeric compounds used in the making of dyes, as a test reagent, and in organic synthesis. |
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