Brown-black to black liq­uid or solid / smell of burnt sugar

Colorless translucent crystal or white coarse to fine powder crystal. Weathering easily in dry air.

Colorless translucent crystal or white coarse to fine powder crystal. Weathering in dry air easily.

The product is colorless translucent crystals or white particles, or white crystalline powder, usually containing a molecular crystal water, odorless, taste very acid, soluble in water, alcohol and ether. 

Malic acid is a colorless to white crystal or crystalline powder, odorless or slightly specific odor, special pleasant sour taste and threshold 0.003%.

Colorless transparent crystal or white crystalline powder. Odorless but sour. 

White granular or crystalline powder. Special and strong sour.

Colorless clear or yellowish viscous liquid / almost odorless/slightly lactic acid flavor / hygroscopicity

 It is colorless to light yellow syrup liquid, which is odorless, or slightly fat acid smell. It has strong acidity.

It is a transparent colorless liquid when 16℃ above. Acetic acid has a distinctive sour taste and pungent smell.  

Vanillin is white to light yellow crystalline powder. It appears vanilla beans unique aroma with slightly sweet. 

Vanillin is white to light yellow crystalline powder. It appears vanilla beans unique aroma with slightly sweet.