Fumes copper

Inhalation of dusts can cause metal fume fever (79,80), and ulceration or perforation of the nasal septum. Mild discomfort has been noted with workplace concentrations as low as 0.08 mg/m. The workplace standard (TLV) for copper dusts or mist is 1 mg/m and 0.2 mg/m for copper fume (81). 

Kupfer-pol, m. Elec.) copper pole (positive pole), -praparat, n. copper preparation, -probe,/, copper assay, test for copper, -raf-fination, /. copper refining, -ranch, m. copper smoke, copper fumes white vitriol,... 

People at special risk from exposure to copper include those with impaired pulmonary function, especially those with obstructive airway diseases, because the breathing of copper fumes might cause exacerbation of pre-existing symptoms due to its irritant properties. 

Toxieology. Copper fume causes irritation of the upper respiratory tract and metal fume fever (MFF), an influenza-like illness. 

Typical MEE, a 24- to 48-hour illness characterized by chills, fever, aching muscles, dryness in the mouth and throat, and headache, has been reported in several workers exposed to copper fume. With MEE, leukocytosis is usually present with counts of 12,000-lb,000/mm recovery is usually rapid, and there are no sequelae." Most workers develop an immunity to these attacks, but it is quickly lost, and attacks tend to be more severe on the first day of the workweek." ... 

The American Conference of Governmental Industrial Hygienists threshold limit value time-weighted average is 0.2 mg m for copper fume and 1 mg m for copper dusts and mists. 

PHYSICAL PROPERTIES reddish solid lustrous, ductile, and malleable metal face-centered cubic (fee) structure becomes dull upon exposure to air becomes coated with a green layer of basic carbonate in moist air odorless solid slowly soluble in ammonia water soluble in nitric acid, hot concentrated sulfuric acid, and hydrogen bromide very slightly soluble in hydrochloric acid and ammonium hydroxide insoluble in hot and cold water copper fume is characterized by finely divided black particulates dispersed in air MP (1083°C, 1981°F) BP (2595°C, 4703°F) DN (8.94 g/cm ) SG (8.94) CP (0.092 cal/g/° C solid at 20° C, 0.112 cal/g/°C liquid at 20°C) HV (1150 cal/g) VD (NA) VP (0 mmHg approximately) MOHS HARDNESS (3.0). 

Note The REL and PEL also apply to other copper compounds (as Cu) except copper fume.] ... 

Synonyms/Trade Names Cu Copper fume CuO Black copper oxide fume. Copper monoxide fume. Copper(ll) oxide fume. Cupric oxide fume... 

A. Inhalation. The recommended workplace limit (ACGIH TLV-TWA) for copper fumes is 0.2 mg/m for dusts and mists, it is 1 mg/m. The air level considered immediately dangerous to life or health for dusts or fumes is 100 mg Cu/m. ... 

A. Inhalation of copper fumes or dusts initially produces a metallic taste and upper respiratory irritation (dry cough, sore throat, and eye irritation). Large exposures may cause severe cough, dyspnea, fever, leukocytosis, and pulmonary infiltrates (see also metal fume fever, p 259). 

Inhalation of copper fumes or dusts. Give supplemental oxygen if indicated by arterial blood gases or oximetry, and treat bronchospasm (see p 8) and chemical pneumonitis (p 7) if they occur. Symptoms are usually short-lived and resolve without specific treatment. 

Copper fumes, dusts, and salts Irritation upon direct contact varies with the ccmpcund, The salts are more irritating and can cause corneal ulceration, Allergic contact dermatitis is rare. Dusts and mists irritating to the respiratory tract nasal ulceration has been desoribed. Ingestion can cause severe gastroenteritis and hepatio injury. See also p 175. 0.2 mg/m (fume) 1 mg/m (dust and mists) 100 mg/m (as Cu) Salts vary in color. Generally odoriess. 

Hazardous Decomp. Prods. Irritating and toxic fumes and gases, hydrogen bromide, copper fumes... 

Copper fume is likely to provide the principal potential health hazard in the arc-air gouging process (Sanderson 1968). 

Sensitivity of NM is also increased by additives that are inert to it and which can represent active EMs (RDX, ammonium nitrate) [137], or by non-active hard powders (aluminium, copper, fumed silica, boron carbide etc.) [131,137]. The amounts of the additives are 3 and 40% w/w in [131] and [136], respectively. The sensitivity of the mixtures is higher than that of neat NM [131,137] however, for example, the sensitivity increase achieved by addition of 3% w/w of boron carbide is less efficient than the effect of the same amount of added diethylenetriamine [131]. The increase can be due [131] to difference in the number density of each in the mixture (difference in the number of available hot spots) or to an impedance mismatch difference, or to a fimction of both variables. 

COPPER FUME (AS CU) Co Synonyms vary dcpcmfing upon speciflc compound Acetylene gas NA NA NA... 

Copper is an essential element of mammalian metabolism. Copper metal has little or no serious toxicity. The most common adverse effect associated with copper is the acute inhalation of copper fume during refining or welding. 

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