Physical and chemical characteristics of naphthalene are mentioned below: Temperature of crystallization 78.6 c min Mass share of ash 0, 01 % max Mass share of sulfur 0, 3 % max Mass share of water 0, 1 % max External looking: solid product like a tablet (weight is not exceeding till 50 kg) Colour: from light gray to gray Place of origin Russia 25-50 bags