Naphthalene CAS NO.91-20-3 | Factory Direct Supply

Product parameters：

Product Name	Naphthalene
CAS	91-20-3
EINECS	202-049-5
Molecular formula	C10H8
Molecular Weight	128.171
Boiling point	221.5±7.0 °C at 760 mmHg
Flash point	78.9±0.0 °C
Melting point	80-82 °C(lit.)
Accurate quality	128.062607
LogP	3.45

Stability: 1. Phthalic anhydride was obtained by air oxidation at 385-390℃ with vanadium pentoxide and potassium sulfate as catalyst and silica gel as support. α -naphthoquinone was formed by oxidation with chromium oxide in acetic acid solution. Hydrogenation to tetrahydronaphthalene, further hydrogenation to decaphthalene. Under the catalysis of ferric chloride, chlorine gas is passed into the benzene solution of naphthalene, mainly to obtain α -chloronaphthalene. It reacts with chlorine under light to produce tetrachloronaphthalene. The nitration of naphthalene is easier than benzene and can be carried out at room temperature. The main product is α -nitronaphthalene. The sulfonated products of naphthalene are related to temperature, α -naphthalene sulfonic acid is obtained at low temperature, and β -naphthalene sulfonic acid is mainly obtained at higher temperature. 2. Naphthalene is less water-soluble and not easily absorbed, so its toxicity is not too strong. Inhaling thick steam or powder of naphthalene can cause vomiting, discomfort, and headaches. In particular, damage to the cornea, causing small blisters and point-like turbidity, but also can cause skin inflammation, sometimes can also cause pathological changes in the lung, but also can damage the kidney, causing hematuria, but not carcinogenicity. The maximum allowable concentration of naphthalene in the workplace is 10×10-6. The production equipment and container should be sealed to prevent steam powder from escaping, and the operation site should be forcibly ventilated. If poisoning occurs, immediately move to fresh air, drink more hot water, make him vomit, artificial respiration, serious cases sent to hospital treatment. 3. Stability 4. Forbidden ligands strong oxidants (such as chromic anhydride, chlorate and potassium permanganate, etc.) 5. Polymerization harm is not polymerization

Packing： 1.1kg/aluminium foil bag, with two plastic bags inside. 2.25kg/fiber drum, with two plastic bags inside. Size:ID 42cm*H52cm,0.08m3/drum. Net Weight:25kgs Gross Weight:28kgs.

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DO YOU ACCEPT SAMPLE ORDER? We accept sample orders. We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing. 2.HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS? You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.3.WHAT'S YOUR MOQ? Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid. 4.DO YOU SUPPLY PRODUCT REPORT? Yes. We'll give you product analysis report before shipping. 5.IS THERE A DISCOUNT? Different quantity has different discount.

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