Paint classification: coloring pigment - chrome yellow

Core tip: Introduction Chinese Name: pigment yellow 34 Chinese alias: C.I Pigment Yellow 34; chrome yellow; Paris yellow; Cologne yellow; lead chrome yellow; lead chromate English Name: lead sulfur yellow English alias: C.I 77603; C.I segment yellow 34; C.I 77600; light chrome yellow; m Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Home of coatings: introduction Chinese Name: pigment yellow 34 Chinese alias: C.I Pigment Yellow 34; chrome yellow; Paris yellow; Cologne yellow; lead chrome yellow; lead chromate yellow English Name: lead sulfur yellow English alias: C.I 77603; C.I segment yellow 34; C.I 77600; light chrome yellow; medium chrome yellow CAS: 1344-37-2 EINECS: 215-693-7 molecular formula: PbCrO4 molecular weight: 323.19 Physical properties melting point (℃) 844: relative density (water = 1) 6.12 boiling point (℃) decomposition relative density (air = 1) no data saturated vapor pressure (kPa) no data combustion heat (kJ / mol) no data critical temperature (℃) no data critical pressure (MPA) no data octanol / water matching coefficient no data appearance and properties: yellow or orange powder Solubility: soluble in alkali, inorganic acid, water and oil Main use: used for making paint, ink, watercolor, pigment, also used for coloring paper, rubber, plastic products Chemical activity stability: stable polymerization hazard: non polymerization taboo: flammable or combustible Combustion (decomposition) products: lead oxide, chromium oxide Solubility: insoluble in water and oil, easily soluble in inorganic acid and strong base solution Reaction to hydrogen sulfide There are many varieties of physical properties, and the color light varies with the ratio of raw materials and preparation conditions Generally, there are five kinds of products: Lemon chrome yellow, light chrome yellow, medium chrome yellow, dark chrome yellow and orange chrome yellow The main component of chrome yellow is lead chromate Light chrome yellow is isomorphic crystal of lead chromate and lead sulfate Orange chrome yellow (Chrome Orange) is basic lead chromate The main component is lead chromate, which is yellow pigment Bright color, high coloring power, strong covering power Notes: the product is incombustible, carcinogenic and irritant Invasion way: inhalation and ingestion Health hazard: acute poisoning: it is irritant to upper respiratory tract after inhalation; it can cause dizziness, headache, nausea, vomiting, gastrointestinal tract stimulation and death after ingestion Chronic effects: anemia, renal damage, lead accumulation, lead poisoning May cause dermatitis and eczema Chromium compounds can cause chromium rhinopathy and skin ulcers The International Center for cancer research (IARC) lists "chromium and certain chromium compounds" as carcinogenic chemicals to humans Storage precautions: store in a cool and ventilated warehouse Keep away from fire and heat It shall be stored separately from inflammable materials, and mixed storage shall be avoided The storage area shall be equipped with appropriate materials to contain the leakage Transportation UN No.: 2291 precautions: during railway transportation, the dangerous goods shall be assembled in strict accordance with the dangerous goods loading table in the transport rules for dangerous goods of the Ministry of railways The packing shall be complete and the loading shall be safe During transportation, ensure that containers do not leak, collapse, fall or damage It is strictly prohibited to mix with inflammables or inflammables, edible chemicals, etc During transportation, it shall be protected from sun exposure, rain and high temperature Transport vehicles and vessels must be thoroughly cleaned and disinfected, or other articles shall not be shipped Flammability: nonflammability hazard: subject to high heat decomposition, release toxic vapor Fire fighting method: fire fighters must wear full body fire and gas protective clothing and put out the fire in the upwind direction When extinguishing the fire, move the container from the fire site to the open space as much as possible First aid skin contact: remove contaminated clothing and wash with plenty of flowing water Eye contact: lift the eyelids and wash with flowing water or normal saline Seek medical advice Inhalation: leave the site to fresh air If breathing is difficult, give oxygen Seek medical advice Ingestion: gastric lavage Drink milk or egg white Seek medical advice The leakage treatment isolates the leakage pollution area and restricts the access It is suggested that emergency treatment personnel wear dust masks (full masks) and gas suits Avoid dust, sweep carefully and transfer to a safe place in a bag If there is a large amount of leakage, cover it with plastic cloth and canvas Collect, recycle or transport to the waste disposal site for disposal Operation, disposal, operation and disposal precautions: close operation and strengthen ventilation Operators must be specially trained and strictly abide by the operating procedures It is recommended that operators wear dust masks (full masks), one-piece rubber cloth gas protective clothing and rubber gloves Keep away from inflammables and combustibles Avoid dust generation Handle with care to prevent damage to packaging and containers Equipped with leakage emergency treatment equipment Empty containers may contain harmful substances The waste disposal method shall be in accordance with the requirements of relevant national and local laws and regulations Or contact the manufacturer or manufacturer to determine the disposal method The difference between chrome yellow and other pigments chrome yellow is a kind of neutral lead chromate, which is a very beautiful slightly warm color, toxic and carcinogenic The lead chromate produced by different methods can be from the lightest lemon yellow, light yellow, medium yellow, dark yellow to orange The chrome yellow on the market has chrome color, such as medium chrome yellow Chrome yellow is strong, opaque and fast drying, and its stability changes significantly with its color depth The darker the color, the more durable it is, the darker the light chrome yellow will become when it is heated or aged Therefore, the chrome yellow in Van Gogh's sunflower and other oil paintings was far from brilliant at first, but bright and dazzling The stability of chrome yellow and common Blues will be improved, but chrome yellow can't be adjusted to the color with sulfur, and it is easy to turn dark and black after adjustment Chrome yellow can not be mixed with lead white Chrome yellow is rare in the market this century The chemical composition of cadmium yellow is cadmium sulfide Cadmium sulfide itself is highly toxic, but the current organic coating technology can greatly reduce the contact toxicity Medium butter is cadmium yellow It has good light resistance, can last for a long time, is very stable, and can dry slowly In addition to the medium yellow, the light yellow, dark yellow and orange colors in the oil painting are also the mixed colors of cadmium or cadmium sulfide and other pigments, which are very stable colors There is also a cadmium lemon yellow, which is much better than lemon yellow in stability, but has poor coloring power It turns orange in the direct sunlight Cadmium yellow has a strong covering power and can be mixed with almost all pigments It reacts with uncommon copper pigments After mixing, it is easy to turn black and mix with chrome green After drying, the color will deepen Tuhuang is a kind of mineral pigment It is a natural iron compound and can be synthesized artificially There are two kinds of domestic products: golden earth yellow and earth yellow There are also light and deep Turquoise produced abroad, which are the most stable among the yellow colors, with strong coloring power and coverage After drying, the color layer is solid and can be mixed with any pigment The stability of chrome yellow, cadmium yellow and rattan yellow are not good enough The domestic YONGGU yellow is stable and can replace other light yellow In addition, cobalt yellow is a bright transparent color, which is stable, but difficult to manufacture, and not easy to mix with ultramarine Regulatory information Regulations on the safety management of hazardous chemicals (Order No 344 of the State Council [2002]); regulations on the labor protection in workplaces where toxic substances are used (Order No 352 of the State Council [2002]); the occupational exposure limit of hazardous factors in workplaces (gbz2-2002) and other relevant regulations are made for the safe use, production, storage, transportation, loading and unloading of hazardous chemicals; lead in the atmosphere and The hygienic standard for inorganic compounds (GB 7355-87) specifies the maximum allowable concentration and detection method of the substance in the air of workplace Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,