It is a pale yellow, odorless, crystalline powder.

It is an odorless powder soluble in water.

At room temperature it appears as a solid, odorless, dark green powder, that yields a blue solution when dissolved in water.

It is a colorless, odorless, toxic white powder with a bitter metallic taste.

It is usually a white, crystalline, odorless powder, that decomposes at 250-270 C.

At room temperature it is a white, odorless, crystalline powder.

But the odorless powder turned out to be nothing more than baking soda.

A white, odorless, crystalline powder with a sweet taste, it is best known for its nutritional role.

Pure morphine and heroin are both fine, white, and odorless powders.

Calcium citrate is an odorless white powder, practically insoluble in cold water.