Styrene flash point

Styrene (phenyl ethylene, vinyl benzene freezing point -30.6°C, boiling point 145°C, density 0.9059, flash point 31.4°C) is made from ethylbenzene by dehydrogenation at high temperature (630°C) with various metal oxides as catalysts, including zinc, chromium, iron, or magnesium oxides coated on activated carbon, alumina, or bauxite (Fig. 1). Iron oxide on potassium carbonate is also used. 

Dehydrogenation of para-ethyltoluene (PET) gives para-methylstyrene, a very useful polymer precursor molecule yielding polymers which have improved properties, such as higher flash-point and glass transition temperature, than those obtained via styrene polymerization. Early work in this area conducted at Mobil has demonstrated that modified HZSM-5 zeolite can result in an improved selectivity to the desired para-isomer. Characterization studies on these modified materials... 

METHYL STYRENE or 3-METHYL STYRENE or 4-METHYL STYRENE or m-METHYL STYRENE or p-METHYL STYRENE mixed Isomers (25013-15-4) C,H,o Flammable liquid. Forms explosive mixture with air (flash point 125°F/51°C). An inhibitor, usually 10 to 50 ppm of tert-butyl catechol, must be present in adequate concentrations to avoid explosive polymerization. Violent reaction with strong oxidizers, strong acids, peroxides and hydroperoxides. Incompatible with catalysts for vinyl or ionic polymers aluminum, aliuninum chloride, ammonia, aliphatic amines, alkanolamines, caustics, copper, halogens, iron chloride, metal salts (e.g., chlorides, iodides, sulfates, nitrates). The uninhibited monomer vapor may block vents and confined spaces by, forming a solid polymer material. On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or CO extinguishers. a-METHYL STYRENE (98-83-9) C,H, Flammable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 0.9 to 6.1 flashpoint 129°F/54°C autoignition temp 1066°F/574°C Fire Rating 2]. Easily polymerizable. Unless inhibited, forms unstable peroxides. Reacts with heat and/or lack of appropriate inhibitor concentration. Reacts with catalysts for vinyl or ionic polymerization, such as aluminum, iron chloride or 2,5-dimethyl-2,5-di(ieri-butylperoxy)hexane. Violent reaction with... 

PHENYL-l, 2-EPOXYETHANE (96-09-3) CgHjO Combustible polymerizable liquid (flash point 165°F/74°C 175°F/79°Ct Fire Rating 2). Violent reaction with strong oxidizers, nitric acid, sulfuric acid. Reacts with acids, alcohols, alkalis, bases, amines, amides, and inorganic hydroxides some salts, possibly causing explosive polymerization. Reacts with 4-(4 -nitrobenzyl)pyridine. On small fires, use dry chemical powder (such as Purple-K-Powder), Halon , or COj extinguishers. See also styrene. 

POLYMERIC BEADS, EXPANDABLE (POLYSTYRENE or POLYSTYRENE BEADS, EXPANDABLE) (9003-53-6) (CgHg), (flash point 644 to 662°F/340 to 350°C autoignition temp 801°F/427°Cf "l). Incompatible with strong oxidizers, hydrocarbon solvents. Decomposes above 572°F/300°C, producing toxic styrene, benzene, carbon monoxide, and other hydrocarbon fumes. On small fires, use alcohol-resistant foam, dry chemical powder, water spray, or CO extinguishers. Note This material may be shipped in a flammable solvent. Check MSDS and refer to solvent carrier. 

STYRENE or STYRENE, MONOMER, INHIBITED or STYRENE MONO-MERE, STABILISE (French) (100-42-5) C,Hj Forms explosive mixture with air [explosion limits in air (vol %) 1.1 to 6.1 flash point 88°F/31°C autoignition tenq)... 

STYRENE HOMOPOLYMER or STYRENE POLYMER (9003-53-6) (CjHg), (flash point 644 to 662°F/340 to 350°C autoignition tenqj 801°F/427°Cf ). Incompatible with strong oxidizers, hydrocarbon solvents. Decomposes above... 

EPOXYETHYLBENZENE or 1,2-EPOXYETHYLBENZENE (96-09-3) Combustible liquid (flash point 165°F/74°C). Violent reaction with strong oxidizers, nitric acid, sulfuric acid. Reacts with acids, alkalis, and some salts, possibly causing explosive polymerization. See also Styrene. 

METHYL STYRENE (25013-15-4) Forms explosive mixture with air (flash point 125°F/51°C). Inhibitor (usually 10-50 ppm of tert-butyl catechol) must be present in adequate concentrations to avoid explosive polymerization. Violent reaction with strong oxidizers, strong acids, peroxides. Incompatible with aluminum chloride, ammonia, aliphatic amines, alkanolamines, caustics, metal salts (e.g., chlorides, iodides, sulfates, nitrates). The uninhibited monomer vapor may block vents and confined spaces by forming a solid polymer material. 

STYRENE MONOMER (100-42-5) Forms explosive mixture with air (flash point 88°F/31°C). Unless inhibited (often with /ert-butylcatechol) in adequate concentrations, polymerization may occur and container may explode. Polymerization can be caused by elevated temperatures above 151°F/66°C, oxidizers, butyl lithium, peroxides, UV light, or sunlight. Violent reaction with chlorosulfonic acid, strong oxidizers, sulfuric acid, xenon tetrafluoride. Incompatible with acids, rust, catalysts for vinyl polymerization, 2,5-dimethyl-... 

The third and final hydrocarbon family to be discussed is known as the aromatic hydrocarbons, sometimes referred to as the BTX fraction (benzene, toluene, xylene). One additional aromatic beyond the BTX fraction is called styrene and will be covered as the fourth aromatic compound. Aromatics as a group are toxic and flammable. They have moderate boiling and flash points, narrow flammable ranges, high ignition temperatures, and are nonpolar. 

Styrene is a colorless, oily, liquid aromatic hydrocarbon with a characteristic odor. It is sometimes called vinylbenzene or phenylethylene. Styrene is a monomer and must be inhibited during transportation and storage to prevent polymerization. It is a moderate fire risk, with a flammable range of 1.1 to 6.1%. The boiling point is 295°F, with a flash point of 88°F and an ignition temperature of 914°F. Small... 

Elammable liquid flash point (closed cup) 31°C (88°F) vapor pressure 4.3 torr at 15°C (59°E) vapor density 3.6 (air = 1) the vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back autoignition temperature 490° C (914°F) fire-extinguishing agent use dry chemical, foam, or CO2 a water spray may be used to cool fire-exposed containers, disperse the vapor, and dilute the spiU. Styrene vapor may form polymers in the vents, stopping the airflow. 

Polyester Resin Kit. The proper shipping name Polyester resin kit covers different kits such as filler, bonding and sealing compounds, chemical anchors and fibreglass repair kits. A polyester resin kit commonly consists of an unsaturated polyester resin mixed with styrene and a separate hardener (usually a phlegmatized organic peroxide) as a minor component. The main component (viscous liquid or paste) is inherently flammable due to the styrene content (flash point 29°C to 32°C). ICAO A2, lATA App. A... 

UP resins do not have unlimited storage stability. When protected from light and heat, the manufacturers generally guarantee storage stability of 6 months (23 C). UP resins are supplied in hobbocks, drums, containers and road tankers made from stainless steel, aluminium, tinplate or sheet iron - sometimes coated inside. Depending on the styrene content, the flash point of UP resins is 28 - 35 C. The necessary precautions must be taken to prevent electrostatic pick-up. 

Tert butyl catechol techn. pure powder 10% solution in styrene (SETA flash point 31) Prolongs (up to many hours) pot life - gel time of resin + (ketone) peroxide + (cobalt) accelerator- at ambient temperature mold release factor improved also efficient at elevated temperatures a c d e f g h i... 

Ethylbenzene, separated from the other isomers by super-fractionation for use in making styrene or as a Rule 66 solvent, has a flash point of 21 C. 

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