- in water: insoluble but can polymerise when exposed to sunlight. Non-corrosive to most metals except copper and copper -containing alloys. Ensure electrical continuity by bonding and grounding (earthing) all equipment. Benzene evaporates into the air very quickly. Ensure adequate ventilation. Vapours are heavier than air and will spread at floor level. 4.5 Corrosion Properties. As a general rule, styrene is ), auto-ignition temperature: 490°C, vapours heavier than air with an odour threshold of 0.1 ppm. Run-off may cause a fire or explosion hazard. Styrene is retained by particulates particularly in organic matter-rich soils(3). Because styrene is heavier than air it will pool at the bottom of a mold cavity and slow down the cure of the gelcoat located in the bottom or lower parts of a mold. PRODUCT AND COMPANY IDENTIFICATION MANUFACTURER DUDICK, INC. 1818 MILLER PARKWAY STREETSBORO, OH, 44241 330-562-1970 24 HR. Flammable mixtures may exist within the vapor space of containers at room temperature. Styrene is 3.6 times heavier than air and rapidly settle down, not spread at height more than 3 ft, but in nearby village and area, people fell which walking, animals died when standing. heavier than air; beware of pits and confined spaces. In addition, styrene monomer is highly reactive, and will polymerize unless inhibited. Use antistatic tools. For more than 70 years, styrene has been used as a chemical building block to make the materials used in a wide variety of finished consumer products, such as food containers, rubber tires, building insulation, carpet backing and boat hulls, surfboards, residential kitchen countertops, bathtubs and shower enclosures. Control Valves - Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners; Gases and Compressed Air - Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves; Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more more quickly. If tank, rail car or tank truck is involved in fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 As styrene thermal polymerization rate becomes important at temperatures higher than 50 °C , , the distillation process must be carried out at reduced pressure . Vapour is heavier than air and may travel considerable distance to a source of ignition and flash back. Vapors from styrene may cause flash fire. EMERGENCY TELEPHONE NUMBER ... vapors may be heavier than air and travel long distances along the ground before igniting and flashing back to vapor source. The main problem in distillation is the very high energy consumption, because TBC is heavier than styrene so a large amount of the monomer purified must be evaporated and then condensed. If the polymerization takes place inside a closed container, the container may rupture violently. Related Topics . : Special hazards arising from the substance or mixture / Conditions of flammability Flammability classification (OSHA 29 CFR 1910.106) ... a-Methyl styrene 10 ppm N/Av 100ppm (Ceiling) N/Av Exposure controls However, the company did not take action to comply with the Notice until they moved premises in March 2015 failing to adequately control exposure of their employees to styrene. Material will float and can be re-ignited on surface of water. Acetone - Thermophysical Properties - Chemical, physical and thermal properties of acetone, also called 2-propanone, dimethyl ketone and pyroacetic acid. 5.2. STYRENE MONOMER, STABILISED Unsuitable extinguishing media Do not use water jet as an extinguisher, as this will spread the fire. What are styrene uses? Of styrene that had been allowed to sorb for 3 days, 61.0 and 66.7% was desorbed in 16 days from soil and aquifer soils, respectively(4). Heat development leads to selfignition. Vapours are heavier than air … Styrene Monomer may accumulate static electricity. In the event of a fire, sty-rene burns and produces toxic and acrid smoke. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors are heavier than air and may travel to a source of ignition and flash back. heavier than air and can spread along the ground in the direction of the wind. The vapour is heavier than air, spreads along the ground and distant ignition is possible. Styrene Monomer can POLYMERIZE resulting in uncontrolled reactions. Environmental precautions Do not allow to enter drains or waterways. A clear colorless to dark liquid with an aromatic odor. Styrene vapors are heavier than air and may concentrate in the lower levels of molds and the work area. Benzene dissolves only slightly in water and will float on top of water. Solvent vapours can form explosive mixtures with air in poorly ventilated conditions. Vapor is heavier than air and may travel a distance to cause a fire or explosion far from the source and flash back. Avoid Sparks. The reaction to styrene-epoxide was stronger than that obtained by patch testing with an equimolar concentration of styrene, 0.1 percent weight per volume in ethanol. 3. • Many liquids are lighter than water. Styrene vapors are heavier than air, and when ignited will flash back to the source, which may explode with enormous force. 4. … • Most vapors are heavier than air. Vapours are heavier than air and may travel considerable distances to a source of ignition and flashback. Its vapor is heavier than air and may sink into low-lying areas. Take precautionary measures against static discharge. • Runoff to sewer may create fire or explosion hazard. Styrene vapors will inhibit and slow the cure of gelcoat. The vapour is heavier than air spreads along the ground and distant ignition is possible. 5.3 Advice for fire -fighters A self contained brea thing apparatus and suitable protective clothing should be worn in fire conditions. The choice of instrument settings for the process measurements was informed by the molecular weight of styrene at 104.15 g/mol which is higher than the averaged equivalent for air at 28.97 g/mol (Engineering Toolbox, 2013).To represent the worst-case scenario, the PID instrument was located on the centreline between the mould tool and the extraction system (Supplementary Fig. POTENTIAL HEALTH EFFECTS EYES: Contact may … Special hazards arising from the substance or mixture Specific hazards Flammable liquid and vapour. Vapour is heavier than air and may travel along the ground; distant ignition is possible. It is insoluble in water and is lighter than water in liquid form. However, after prolonged exposure to the chemical, the ability to Using fans to circulate air will help clear low-lying areas of really intense concentrations. vapours are flammable, heavier than air, can cause explosions when in contact with sparks. • Vapors may form explosive mixtures with air. Related Topics . Behaviour in the environment . Initial Boiling Point For Styrene 293.40 Deg F (145.22 Deg C) @ 760.00 mm Hg Vapor Pressure For Styrene 4.3 mm Hg 68 Deg F (20.00 Deg C) Vapor Density Air = 1 3.6 Specific Gravity 1.110 - 1.130 @ 77.00 Deg F (25.00 Deg C) Percent Non-volatiles 55.0% Evaporation Rate Slower than Ether Even when inhibitor is It is reported as a gas leak, not fire blast, that means it was not the cause. In the event of a spill, styrene forms a slick that spreads on the water surface and evaporates . Results of PBT and vPvB assessment: This substance does not meet the PBT/vPvB criteria of REACH, Annex XIII. Dense smoke is produced when product burns. Styrene is heavier than air, so if you are working down in a mold, the concentration of styrene will be very high because it doesn’t want to float up and out. This can be quite easily done by comparing the molar mass of the given gas with that of dry air. Styrene's low flash point and lower explosive limit render it a serious fire and explosion hazard. Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents . At elevated temperature such as in fire condition, polymerisation may take place, which may lead to container explosion. In the atmosphere, styrene, being heavier than air settles down soon, is rapidly dispersed, especially in the presence of sunlight. Carbon monoxide, Carbon dioxide. 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