Last edited by Fenrigore
Tuesday, August 4, 2020 | History

2 edition of Occupational exposure to nitric acid found in the catalog.

Occupational exposure to nitric acid

National Institute for Occupational Safety and Health. Office of Research and Standards Development

Occupational exposure to nitric acid

by National Institute for Occupational Safety and Health. Office of Research and Standards Development

  • 76 Want to read
  • 7 Currently reading

Published by Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Cincinnati, Ohio, Washington .
Written in English

    Subjects:
  • Nitric acid -- Physiological effect,
  • Industrial hygiene -- Standards -- United States

  • Edition Notes

    Other titlesCriteria for a recommended standard ... occupational exposure to nitric acid
    SeriesCriteria for a recommended standard, DHEW publication ; no. (NIOSH) 76-141, DHEW publication -- no. (NIOSH) 76-141
    ContributionsTabershaw-Cooper Associates
    The Physical Object
    Paginationvii, 78 p. ;
    Number of Pages78
    ID Numbers
    Open LibraryOL15397435M

    Identify important occupational exposure limits (OELs) associated with at least 3 common oxidizers. Unit V Research Paper. OSHA issued the Process Safety Management of Highly Hazardous Chemicals Standard (PSM) (29 CFR ) which contains requirements for the safe management of chemicals for companies that exceed OSHA’s threshold quantities for highly hazardous ://   Pickling and other acid treatments of metal may entail occupational exposures to nitric and phosphoric acids, but these occur less frequently than exposures to sulfuric and hydrochloric acids. Exposure to nitric acid also occurs during its manufacture and exposure to phosphoric acid in phosphate fertilizer

      Nitric acid and cellulose material ­ explosive Epidemiological data available for occupational exposure to perchloric acid is limited and exposure limits have not been defined (National Institute of Occupational Safety and Health, ). Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, and /services/safety/docs/   and for making Nitric Acid and other Nitrogen compounds. f ODOR THRESHOLD = to 1 ppm f Odor thresholds vary greatly. Do not rely on odor alone to determine potentially hazardous exposures. Reasons for Citation f fNitric Oxide is on the Right to Know Hazardous Substance List because it is cited by OSHA, ACGIH, DOT, NIOSH, DEP, IRIS, NFPA and

      Identify the chemical properties, uses, and primary hazards associated with common oxidizers including concentrated nitric acid. OSHA issued the Process Safety Management of Highly Hazardous Chemicals Standard (PSM) (29 CFR ) which contains requirements for the safe management of chemicals for companies that exceed OSHA’s threshold quantities for highly Background: Exposure to mercury (Hg) as a heavy metal can cause health effects. The objective of this study was to assess occupational exposure to Hg in a chlor-alkali petrochemical industry in Iran by determining of Hg concentrations in air, blood and urine samples. Methods: The study was performed on 50 exposed subjects and 50 unexposed ://


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Occupational exposure to nitric acid by National Institute for Occupational Safety and Health. Office of Research and Standards Development Download PDF EPUB FB2

Nitric acid (HNO₃) is a colorless liquid with yellow or red fumes with an acrid odor. Exposure to nitric acid can cause irritation to the eyes, skin, and mucous membrane; it can also cause delayed pulmonary edema, pneumonitis, bronchitis, and dental erosion.

Nitric acid is highly corrosive. Workers may be harmed from exposure to nitric :// Exposure Limits. NIOSH REL TWA 2 ppm (5 mg/m 3) ST 4 ppm (10 mg fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.] National Institute for Occupational Safety and Health.

NIOSH Pocket Guide to Chemical Hazards Occupational Exposure to Nitric Acid Criteria for a recommended standard DHEW publication: Authors: National Institute for Occupational Safety and Health. Office of Research and Standards Development, National Institute for Occupational Safety and Health: Contributor: Tabershaw-Cooper "Occupational exposure to nitric acid" is defined as exposure to airborne concentrations of nitric acid equal to or exceeding one-half the recommended workroom environmental limit.

Adherence only to sections 3, 4(a), 4(b), 4(c) (1) (C), 5, and 6 is required when workplace environmental concentrations of nitric acid are not greater NITRIC acid (HNO3) is a colorless, photochemically stable gas in the atmosphere (EPA ). It is highly soluble in water to form an aqueous HNO3 solution.

Fuming HNO3 is concentrated nitric acid that contains dissolved NO2. Fuming nitric acid is a yellow-to-red fuming liquid with an acrid, suffocating odor. Because it is so volatile, HNO3 gas at normal atmospheric concentrations does not   NITRIC ACID EXPOSURE IN A CHEMISTRY TEACHING LAB A recent incident in a chemistry teaching lab resulted in a student’s face being spattered with concentrated nitric acid.

The emergency eyewash was used to wash off the acid. Then the student was taken to the hospital for further evaluation and treatment. The Nitric acid (HNO 3) is a strong acid and oxidizing agent used for various applications including production of ammonium nitrate in the fertilizer industry.

Nitrogen oxides formed when nitric acid interacts with the environment have been implicated in inhalation injuries. This describes a case of a year-old male who presented to the emergency department complaining of an acute onset of   "Criteria document setting standards for occupational exposure to nitric-acid () on the basis of health effects of exposure.

Topics include environmental, medical, and personnel aspects of a nitric-acid standard, biologic effects of exposure,   Nitric oxide is slightly soluble in water and forms nitrous and nitric acid. This reaction occurs with lung tissue and produces respiratory irritation and edema.

Alkali present in the lung tissue neutralizes the nitrous and nitric acids to nitrite and nitrate salts which are then absorbed into the ://   This chemical inventory is OSHA's premier one-stop shop for occupational chemical information.

It compiles information from several government agencies and organizations. Information available on the pages includes: Chemical identification and physical properties Exposure Introduction. The clinical course, pathophysiology and management of lung injury caused by nitrogen dioxide inhalation are seldom documented and believed to be under-reported [].Several diseases can lead to bronchiolitis obliterans organizing pneumonia (BOOP), and other known causes include post-infection, drugs, radiotherapy, organ transplantation, connective tissue disorder and environmental Fatal Pulmonary Edema After Acute Occupational Exposure to Nitric Acid   Inhalation exposure to nitric acid is a common occupational hazard as it readily forms a vapour at room temperature.

Symptoms of an acute inhalation exposure to nitric acid include a burning sensation, dry nose and throat, cough, chest pain, shortness of breath, headache and difficulty breathing [3].

/file//Nitric_acid_TO_pdf. Occupational Exposure Limits nitric acid (Nitric acid) 2 4 TLV Basis: upper respiratory tract & eye irritation; dental erosion US - Wyoming Toxic and Hazardous Substances Table Z1 Limits for Air Contaminants nitric acid (Nitric acid) 2 5 Canada - Quebec Permissible Exposure Values for Airborne Contaminants (English) nitric acid (   Occupational exposure limits for chemical substances Substance [CAS No.] OEL Skin absorption Class of carcino-genicity Class of sensitizing potential Repro-ductive Toxicants Year of pro-posal ppm mg/m3 Airway Skin Acetaldehyde [] 50* 90* 2B ’90 Acetic acid [] 10 25 ’78 Acetic anhydride [] 5* 21* ’90 Acetone [ Background: Nitric acid (HNO 3) is a solution of nitrogen dioxide (NO 2) in water commonly used as an industrial chemical and of nitrogen liberated as nitric acid interact with the environment to cause inhalation injuries.

The coexistence of HNO 3 with varying oxides of nitrogen likely results in the large continuum of symptoms related to HNO 3 exposure and varying times of   Large amounts of Boric Acid can be harmful to boron-sensitive plants and other ecological systems.

POTENTIAL HEALTH EFFECTS: Routes of Exposure: Inhalation is the most significant route of exposure in occupational and other settings.

Dermal exposure is not usually a concern because Boric Acid is not absorbed through intact :// to NO 2, which is more toxic, the two chemicals should be monitored simultaneously (ACGIH ).

NO primarily is used as an intermediate in the production of nitric acid (Budavari et al. In recent years, NO has been recognized for its role as a regulator of cardiovascular, immune, and nervous system functions (Kiss ; Weinberger et al.

Murphy et al. [4] also reported a fatal pulmonary edema and circulatory collapse 53 hours after occupational exposure to nitric acid. Treatment is largely supportive and the use of nitric oxide   NITRIC acid (HNO 3) is a colorless, photochemically stable gas in the atmosphere (EPA ).It is highly soluble in water to form an aqueous HNO 3 solution.

Fuming HNO 3 is concentrated nitric acid that contains dissolved NO nitric acid is a yellow-to-red fuming liquid with an acrid, suffocating ://. Oxides of nitrogen liberated as nitric acid interact with the environment to cause inhalation injuries.

The coexistence of HNO(3) with varying oxides of nitrogen likely results in the large continuum of symptoms related to HNO(3) exposure and varying times of onset--acute, subacute, and Book: All Authors / Contributors: National Institute for Occupational Safety and Health.

OCLC Number: Description: vii, pages: illustrations ; 28 cm. Series Title: HEW publication, no. (NIOSH) Other Titles: Criteria for a recommended standard, occupational exposure to oxides of nitrogen (nitrogen dioxide and nitric oxide)Characterisation of occupational exposure to air contaminants in a nitrate fertiliser production plant a calcium nitrate fertiliser production department, nitric acid- and ammonia-production departments, and a shipping department.

The overall median inhalable and thoracic aerosol mass concentrations were generally low books or book