Fumes magnesium oxide

Safety. Magnesium oxide (fume) has a permissible exposure limit (PEL) (134) (8 hours, TWA), of 10 mg/m total dust and 5 mg/m respirable fraction. Tumorigenic data (intravenous in hamsters) show a TD q of 480 mg/kg after 30 weeks of intermittent dosing (135), and toxicity effects data show a TC q of 400 mg/m for inhalation in humans (136). Magnesium oxide is compatible with most chemicals exceptions are strong acids, bromine pentafluoride, chlorine trifluoride, interhalogens, strong oxidizers, and phosphorous pentachloride. 

Magnesium oxide fume Malathion Maleic anhydride Manganese Manganese fume MBK (2-hexanone)... 

Toxicology. Magnesium oxide fume is an irritant of the eyes and nose. 

In a very early report, experimental subjects exposed to fresh magnesium oxide fume developed metal fume fever, an illness similar to influenza effects were fever, cough, oppression in the chest, and leukocytosis. After the introduction of a new process resulting in exposure to magnesium oxide fume in the 1980s, several German foundry workers developed recurrent occupational fever that was also interpreted as metal fume fever. ... 

Drinker KR, Thomson RM, Finn JL Metal fume fever. The effects of inhaled magnesium oxide fume.y Ind Hyg 9 187-192, 1927... 

At that time, NIOSH also conducted a limited evaluation of the literature and concluded that the documentation cited by OSHA was inadequate to support the proposed PEL (as an 8-hour TWA) of 10 mg/m for the compounds listed below. The current PEL for magnesium oxide fume is 15 mg/m (8-hour TWA, total particulate), and the eurrent PEL for molybdenum (insoluble eompounds as Mo) is 15 mg/m (8-hour TWA, total dust). For the other eompounds listed below the eurrent PEL is 15 mg/m (8-hour TWA, total dust) and 5 mg/m (8-hour TWA, respirable dust). 

Magnesium oxide fume (CAS 1309-48-4) Slightly Irritating to eyes and upper respiratory tract. lOmg/m 750 mg/m White tume. 

Drinker K, Drinker P. 1928. Metal fume fever V. Results of the inhalation by animals of zinc and magnesium oxide fumes. J Ind Hyg 10 56-70. 

Capture of the magnesium oxide fume requires an increased energy use and therefore results in increased emissions from energy production. External re-use of the MgO powder leads to a reduced need for primary material. 

The costs for abatement of the magnesium oxide fume emissions are estimated at about EUR 51.30 per tonne of metal treated. 

Excessive exposure to MgO vapor produced can cause metal fume fever. TLV equals that of magnesium oxide fume. 

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