Flammability hazards

Immediately after the running test, any compressor intended for toxic, hazardous, flammable, or hydrogen-rich service should be gas tested with an inert gas to the maximum seal design pressure. The test is held at least 30 minutes and the casing and its joints checked for leaks, using a soap bubble method or other suitable means for leak detection. When no leaks are detected, the compressor will be considered acceptable. 

Gases with a health hazard, flammability, or reactivity ranking of 3 or 4 (toxic or highly toxic) should also be used and dispensed from a ventilated gas cabinet. The cylinder and any fittings subject to leakage should be enclosed by the cabinet. ... 

A laboratory can sometimes save money by building a simple hood where no hazardous, flammable, or corrosive fumes are involved. In one case, a hood was needed solely for drawing off unpleasant fumes from a muffle furnace and water vapor. A carpenter constructed a plywood box which reached from counter top to ceiling and had a large opening in the front. This was painted with a resistant paint, primarily to seal the surfaces and make them easy to clean. An inexpensive fan exhausted the hood to the outside. This simple hood worked for many years. 

Proper ventilation is another method used to prevent fires and explosions. The purpose of ventilation is to dilute the explosive vapors with air to prevent explosion and to confine the hazardous flammable mixtures. 

Potential hazards (flammability, corrosivity, etc.) are reviewed to identify concerns regarding the storage and handling of reactive chemicals, and information is obtained from raw material suppliers (e.g., technical bulletins). Flashpoint, DSC, or differential thermal analysis (DTA) testing is typically done by the customer. 

Paraldehyde is a colorless liquid, hazardous, flammable, miscible with most organic solvents, and soluble in water. If you leave it alone, it will slowly decompose back to acetaldehyde, so it is often used as a substitute for... 

Metaldehyde is a white solid that will also decompose partially to acetaldehyde, but only if it is heated above 175°F. It is hazardous, flammable, and of little commercial use. 

Gt Brit, Dept of Scientific Industrial Res, "Safety Measures in Chemical Laboratories", HMSO, 2nd ed (195 ), 21pp 98)National Safety Council, "Accident Prevention Manual for industrial Operations , Chicago, 111, 3rd ed (1955) (Includes sections on elec hazards, chem hazards, flammable liqs Industrial poisons) 98a)E. Wiberg R.U.Lacal, Rev AcadCienc Exact, Fis Qutm y Nat Zaragoza 10, No 1, 93-96 (1955) CA 51, 15320 (1951)... 

Epichlorohydrin (l-chloro-2,3-epoxypropane). Widely available. Used to epoxy activate the Sepharose CL-6B beads or other surfaces. The extent of epoxy activation of beads may be determined see Note 2). A high-purity (+99%) or equivalent should be used. It is a very unstable compound and must be stored at 0-4°C in an anhydrous environment. Hazards Flammable, poison, toxic by inhalation or contact with skin, and if swallowed may cause cancer. Toxicity data LD50 90 mg/kg oral, rat. Should be handled in a fume hood with safety glasses and gloves, and treated as a possible cancer hazard. 

After leaving the preparation process, the flakes (or collets) are delivered to the solvent extraction operation. As this process typically uses a flammable solvent (and is classified as a hazardous flammable environment), the operation is usually somewhat removed from other facilities, and access to the controlled area is restricted. Figure 5 illustrates the typical unit operations associated with solvent extraction, which include extraction, solvent distillation, and liquid-phase recovery. Upon discharge from the extractor, solid-phase extracted material is desolventized, toasted, dried, and cooled prior to meal finishing. 

Hazard Flammable, dangerous fire risk. Explosive limits in air 2.6-12.8%. TLV 750 ppm. Narcotic in high concentrations. Moderately toxic by ingestion and inhalation. 

Hazard Flammable in contact with water and alcohols. Spontaneous ignition in moist air store and handle in nitrogen. 

Hazard Flammable, moderate fire risk. Basis of a group of hallucinogenic (habit-forming) drugs that affect the central nervous system. Sale and use restricted to physicians. Production limited by law. 

Hazard Flammable, high fire risk. Explosive limits in air 1.1 to 7.5%. 

Hazard Flammable, moderate fire risk. Toxic. TLV 125 ppm. 

Hazard Flammable, dangerous fire risk. Strong irritant. 

Hazard Flammable, dangerous fire risk, a strong oxidizer. Vapor may explode if ignited. 

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