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Naphthalene 99%; CAS Number: 91-20-3; EC Number: 202-049-5; find Sigma-Aldrich-147141 MSDS, related peer-reviewed papers, technical documents, similar products & …
2021-6-25 · EPA has classified naphthalene as a Group C, possible human carcinogen. (6,7) Physical Properties The chemical formula for naphthalene is C10H8, and its molecular weight is 128.19 g/mol. (1) Naphthalene occurs as a white solid or powderthat is insoluble in water. (1,8) Naphthalene has a strong, mothball odor, with an odor threshold of 0.44 mg/m 3
Napthalene is a bicyclic aromatic hydrocarbon with the chemical formula C,,,Hg and a molecular weight of 128.16. Pure naphthalene forms a white crystalline solid at room temperature whereas the crude or technical grades may range in color from brown to tan. Naphthalene vapor and dust can form explosive mixtures with air (Windholz, 1976).
China Naphthalene manufacturers - Select 2021 high quality Naphthalene products in best price from certified Chinese Organic Intermediate, Methyl Cellulose suppliers, wholesalers and factory on Made-in-China
Naphthalene-d8 Revision Date 19-Jan-2018 9. Physical and chemical properties Physical State Solid Appearance White Odor Odorless Odor Threshold No information available pH No information available Melting Point/Range 81 - 83 °C / 177.8 - 181.4 °F Boiling Point/Range No information available Flash Point 78 °C / 172.4 °F Evaporation Rate Not ...
Shop 1,5-Diaminonaphthalene, 97%, Thermo Scientific™ at Fishersci.se
2019-12-14 · The naphthalene sublimation technique is an experimental method for indirectly determining convective heat transfer. The technique is here assessed for two different configurations: the local heat transfer distribution for a circular air jet impinging normal to a flat surface, and the heat transfer occurring in the stator core of an electric generator model. The …
1997-7-31 · The standard physical property of a solid is its melting point. The melting point is actually a melting point range. It is used to help determine the purity of a solid and to help verify the identity of the compound. A pure compound should melt over a narrow temperature range. Impurities usually cause the melting point range to widen and lower ...
Naphthalene was used in liquid-phase exfoliation of graphite in organic solvents for the production of graphene sheets. It was used in preparation of carbon-coated Si 70 Sn 30 nanoparticles. It was used as fluorescent probe to study the aggregation behavior of sodium cholate.
Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Use spark-proof tools and explosion proof equipment. Take precautionary measures against static discharges. Do not get on skin or in eyes. Do not ingest or inhale. Use only in a chemical fume hood. Storage: Keep Naphthalene (CAS NO.91-20-3) away from sources of ...
Iupac Name： naphthalene. CAS No.： 91-20-3. Molecular Weight： 128.17052. Introduction: Naphthalene is a white solid chemical that vaporizes easily. It has …
Crystallization processes/techniques can be distinguished by the manner in which the supersaturation is created. The most frequently applied types of crystallization are: Evaporative crystallization Cooling crystallization from solution or the melt Reactive crystallization or precipitation. The choice for a certain method depends on the properties of the compound to …
2019-10-28 · NAPHTHALENE NTM CAUTIONARY RESPONSE INFORMATION Common Synonyms Solid Colorless Mothballs odor Solidifies and floats or sinks in water. Naphthalin Tar camphor Keep people away. Avoid inhalation. Call fire department. Avoid contact with liquid and solid. Notify local health and pollution control agencies. Fire Combustible.
2021-2-7 · Naphthalene, Molten Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations ... H228 Flammable solid Acute toxicity (oral) Category 4 ... Ground/Bond container and receiving equipment. P241 - Use explosion-proof electrical, lighting, ventilating equipment. ...
Naphthalene is a white, volatile, solid polycyclic hydrocarbon with a strong mothball odor. Naphthalene is obtained from either coal tar or petroleum distillation and is primarily used to manufacture phthalic anhydride, but is also used in moth …
Naphthalene Uses. Naphthalene (CAS NO.91-20-3) has widely uses: 1. It can be used as a chemical intermediate, mainly used as a precursor to other chemicals.The single largest use of naphthalene is the industrial production of phthalic anhydride, although more phthalic anhydride is made from o-xylene.
Crystallization is a solid-liquid separation technique in which solid crystals are formed from a liquid solution. Crystallizers can eliminate liquid wastes to create zero liquid discharge (ZLD). Crystallization is divided into two stages: primary …
Wettable Powders (WP) and Water Dispersible/Wettable Granules (WDG/WG) In wettable powder formulations (WP) the solid active is ground into fine particles. When mixed with water to create the spray mix, the WP must be wetted easily and suspend readily. This is achieved by adding appropriate adjuvants during the WP preparation process.
2020-4-8 · a flammable solid is a solid that is readily combustible, or may cause or contribute to fire through friction. Readily combustible solids are powdered, granular, or pasty chemicals that can be easily ignited by brief contact with an ignition source, such as a burning match, and the resulting flame spreads rapidly.
Suitable products for Naphthalene (crude or refined) C 10 H 8. Whether portable gas detectors, gas detection tubes or personal protective equipment - Dräger offers a comprehensive portfolio to protect you when handling hazardous substances. Quick navigation.
2020-12-31 · Solid 7 rubber stopper; Test tube rack; Large crystallizing dish / Desiccator; Goal. You will be given 2.00 g of impure naphthalene (mothballs!); your job is to purify the naphthalene by recrystallization without losing a significant …
Definiton of Solid-Phase Extraction. SPE is a sample preparation technology that uses solid particle, chromatographic packing material, usually contained in a cartridge type device, to chemically separate the different components of a …
2-Vinylnaphthalene is employed in the synthesis of various copolymers such as Poly (sodium styrenesulfonate-co-2-vinyl-napthalene) copolymer and Poly (2-vinylnapthalene-alt-maleic acid)-graft-polystyrene. The latter finds applications …
Flammable solid Harmful if swallowed May be harmful in contact with skin Suspected of causing cancer Very toxic to aquatic life with long lasting effects . Transportation UN Classification UN Hazard Class: 4.1; UN Pack Group: III STORAGE; Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access.
2017-6-1 · Alkylated Naphthalene Structure R1 to R8 are independently a linear or branched alkyl group or hydrogen. The core naphthalene system consists of two fused six -membered rings with a electron rich conjugated π system. Alkylated Naphthalenes for High Temperature Applications 4
2018-10-17 · Naphthalene Massachusetts RTK: Naphthalene TSCA 8(b) inventory: Naphthalene TSCA 8(a) PAIR: Naphthalene TSCA 8(d) H and S data reporting: Naphthalene: 06/01/87 SARA 313 toxic chemical notification and release reporting: Naphthalene: 1% CERCLA: Hazardous substances.: Naphthalene: 100 lbs. (45.36 kg) Other Regulations:
2010-1-8 · IIIA Flammable solid. When heated to decomposition, emits acrid fumes 2 Protective equipment and precautions for firefighters: Use foam or dry chemical to extinguish fire. 2 0 Firefighters should wear full fire fighting turn-out gear and respiratory protection (SCBA).
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