Materials hazards incompatibility

Cas Hazard Materials of construction for ancillary services Compatible Incompatible... 

The worst hazard scenarios (excessive temperature and pressure rise accompanied by emission of toxic substances) must be worked out based upon calorimetric measurements (e.g. means to reduce hazards by using the inherent safety concept or Differential Scanning Calorimetry, DSC) and protection measures must be considered. If handling hazardous materials is considered too risky, procedures for generation of the hazardous reactants in situ in the reactor might be developed. Micro-reactor technology could also be an option. Completeness of the data on flammability, explosivity, (auto)ignition, static electricity, safe levels of exposure, environmental protection, transportation, etc. must be checked. Incompatibility of materials to be treated in a plant must be determined. 

Fire and explosion hazards are briefly summarized in terms of conditions of flammable or reactive hazard. Materials that are incompatible with the entr are listed here. Fire and explosion hazards are briefly summarized in terms of conditions of flammable or reactive hazard. Fire-fighting materials and methods are discussed where feasible. A material with a flash point of 100°F or less is considered dangerous if the flash point is from 100 to 200°F, the flammability is considered moderate if it is above 200°F, the flammability is considered low (the material is considered combustible). 

Materials must be stored in such a manner as to minimize all hazards involved. Incompatible chemicals must not be stored side-by-side in one common catch container or shelf. 

HAZARD RISK Flammable liquid fire hazard when exposed to heat, flame, sparks, friction or oxidizing materials incompatible with strong oxidziers, active metals such as sodium, potassium and zinc, rust, halogens and amines vapor ignites on contact with fluorine potentially explosive when heated in contact with rust, iron potentially explosive reaction in contact with nitrogen oxide explodes on contact with permanganic acid decomposition emits toxic fumes of SOx NFPA code H 3 F 3 R 0. 

HAZARD RISK Dangerous fire hazard when exposed to heat or flame autooxidizes in air to form an unstable peroxide decomposition emits toxic fumes of Cl" reacts with oxidizing materials incompatible with chromic anhydride NFPA Code H 2 F 3 R 0. 

EXPLOSION and FIRE CONCERNS flammable NFPA rating Health 1, Flammability 3, Reactivity 0 dangerous fire hazard when exposed to heat, flame, or oxidizers moderately explosive flashback along vapor trail may occur vapor may be explosive if ignited in confined area can react vigorously with oxidizing materials incompatible with nitrates, alkalies and acids keep away from heat and open flame use alcohol foam, dry chemical, or carbon dioxide for firefighting purposes. 

CHEMICAL PROPERTIES stable under ordinary conditions of use and storage hazardous polymerization will not occur can react with strong oxidizing materials incompatible with chlorine dioxide non-corrosive FP (< - 40°C, <40°F) LFL/UFL (2.1% (propane) 1.9% (butane), 9.5% (propane) 8.5% (butane)) AT (426 - 537°C, 799 - 998.6°F). 

CHEMICAL PROPERTIES stable under ordinary conditions of use and storage hazardous polymerization has not been reported a powerful oxidizer sensitive, but weak, explosive when pure can react vigorously with oxidizing materials incompatible with finely divided metals, iron and iron salts, copper, brass, zinc or rubber no reaction with water FP (>110°C, >230°F) LFL/UFL (unknown) AT (unknown) HC (data not available) IR (1.4384 at 20°C) HLC (2.55 x 10 atm-mVmole (calc)). 

Precaution DOT Corrosive material incompat. with anionic detergents Hazardous Decomp. Prods. Fleated to decomp., emits toxic fumes of Cl, ... 

Precaution DOT Poisonous material incompat. with strong bases, reactive metals, alkali metals, strong oxidizers, nitromethane, potassium t-butoxide vigorous reactions, ignition, explosions possible Hazardous Decomp. Prods. Slowly decomp, to produce hydrogen chloride reacts with oxidizers to form highly toxic phosgene gas and chlorine... 

Precaution Combustible reacts with oxidizing materials incompat. with acids (can hydrolyze to form acetic acid and alcohol), bases (can hydrolyze to form acetate salt and alcohol) mod. explosion hazard as vapor when heated... 

Precaution Combustible dangerous fire hazard exposed to heat or flame can react vigorously with oxidizing materials incompat. with strong oxidizing agents and strong acids... 

Properties Wh. to It. yel. ayst. odorless sol. in water, ethanol, acetone m.w. 206.98 dens. 2.711 (20 C) m.p. 340 C, loses water > 100 C Toxicology LDLo (oral, rat) 4500 mg/kg, (IP, rat) 625 mg/kg mod. toxic by ing. and IP routes Precaution Powerful oxidizer dangerous fire risk forms explosive mixts. with combustible materials incompat. with Al, As, C, Cu, Mn02, metal sulfides, S, organic matter, P Hazardous Decomp. Prods. CaOx heated to decomp., emits toxic fumes of Cl ... 

Precaution Reacts with water (dec.) probably self-reacts at elevated temp. may undergo uncontrolled exothermic polymerization upon contact with incompat. materials incompat. with heat, alcohols, strong bases and oxidizers, amines, acids Hazardous Decomp. Prods. Heated to decomp, emits CO, CO2, NOx, hydrogen cyanide, hydrogen chloride gas emits toxic fumes underfire conditions... 

Precaution Powerful oxidizing agent may explode on contact with reducing agents may ignite in contact with org. materials incompat. with acetic acid, alcohols, alkali metals, ammonia, phosphorus, sodium, sulfur, etc. Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes NFPA Health 3, Flammability 0, Reactivity 1 Storage Deliq. 

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