Naphtha, flash-point

METHYL PARATHION (298-00-0) CgHjoNOjPS Combustible solid or a flammable hydrocarbon solvent solution (commercial product). Forms explosive mixture with air [explosion limits in air (vol %) 1.0 to 7.0 (xylene) 0.7 to 7.0 (light aromatic solvent naphtha) flash point 78°F/26°C 115°F/46°C oc autoignition tenp 498°F/928°C (in xylene) 830 to 870°F/443 to 466°C (light aromatic solvent naphtha) ... 

Liquid fuels for ground-based gas turbines are best defined today by ASTM Specification D2880. Table 4 Hsts the detailed requirements for five grades which cover the volatility range from naphtha to residual fuel. The grades differ primarily in basic properties related to volatility eg, distillation, flash point, and density of No. 1 GT and No. 2 GT fuels correspond to similar properties of kerosene and diesel fuel respectively. These properties are not limited for No. 0 GT fuel, which allows naphthas and wide-cut distillates. For heavier fuels. No. 3 GT and No. 4 GT, the properties that must be limited are viscosity and trace metals. 

Ground turbine fuels are not subject to the constraints of an aircraft operating at reduced pressures of altitude. The temperature of fuel in ground tanks varies over a limited range, eg, 10—30°C, and the vapor pressure is defined by a safety-handling factor such as flash point temperature. Volatile fuels such as naphtha (No. 0-GT) are normally stored in a ground tank equipped with a vapor recovery system to minimise losses and meet local air quaUty codes on hydrocarbons. 

In studying the environmental effects of naphtha, it is necessary to relate volatility to the fire hazard associated with its use, storage, and transport, and also with the handling of the products arising from the process. This is normally based on the characterization of the solvent by flash point limits (ASTM D56, D93 IP 34, 170)... 

Liquids with flash points below Gasoline, naphtha, benzol, and similar 55... 

Naphthalene (melting point 80.3°C, density 1.175, flash point 79°C) is very slightly soluble in water but is appreciably soluble in many organic solvents such as 1,2,3,4-tetrahydronaphthalene (tetralin), phenols, ethers, carbon disulfide, chloroform, benzene, coal-tar naphtha, carbon tetrachloride, acetone, and decahydronaphthalene (decalin). 

A waste is an ignitable hazardous waste if it has a flash point of less than 60 °C, readily causes fires and burns so vigorously as to create a hazard. A simple method of determining the flash point of a waste is to review the material safety data sheet, which can be obtained from the manufacturer or distributor of the material. Naphtha, lacquer thinner, epoxy resins, adhesives, and oil based paints are all examples of ignitable hazardous wastes. 

Jet-B This is a wide cut kerosene with lighter gasoline type naphtha components. It is used widely in Canada. It contains a static dissipator and has a very low flash point ... 

COAL TAR NAPHTHA or COAL TAR OIL, HEAVY DISTILLATE (8030-30-6) Highly flammable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 1.0 to uel unknown flash point 100 to 107°F/37 to 42°C Fire Rating 2]. Violent reaction with strong oxidizers concentrated nitric acid. Incompatible with strong acids, nitrates. May attack some plastics, mbber, and coatings. On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or CO2 extinguishers. COAL TAR OIL or COAL TAR, BROWN or COAL TAR EXTRACT or COAL TAR OINTMENT (8007-45-2 69912-81-8 91722-33-7 101316-83-0) see tar, liquid. 

ALIPHATIC PETROLEUM NAPHTHA (8002-05-9) Flash point -40°C to -86°F/ —40°F to 66°C. Incompatible with nitric acid oxidizers may cause fire and explosions. 

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