Synthetic camphor ball is a kind of organic compounds, containing naphthalene camphor ball mostly white, pungent odor, and drowned in the water; Is listed as carcinogens.
Natural camphor ball is smooth shows colorless or white crystals, odour fragrance, will float in water. For insect-resistant, mothproof, mildew of natural camphor ball is also known as smelly bead, originally derived from camphor tree leaves have fragrant taste of organic compounds. Also used for medicine, spices, etc., medicine, used as a strong heart.

Molecular weight 152.23 InChI InChI = 1 / C10H16O/c1-9 (2) the 7-4-5-10 (9, 3) 8 (11) 6-7 / h7H, 4-6 h2, density of 1-3 h3 melting point 179 ℃ relative density 0.99 (water = 1) boiling point 204 ℃ 64 ℃ water soluble flash point 0.12 g / 64 mL (25 ℃).