Sulfuric Acid

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    Jennifer
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    General Description

    Synonyms:  Oil of vitriol; Sulphuric acid

    OSHA IMIS code: 2310

    CAS number(s): 7664-93-9

    Monitoring Methods used by OSHA
    Laboratory Sampling/Analytical Method:
    mixed cellulose ester filter (MCEF) 0.8 microns
    treated silica gel tube (Supelco ORBO-53; SKC, 226-10-03 or equivalent)
    On-Site Sampling Techniques/Methods:
    detector tube (Dräger)
    detector tube (Gastec)
    Wipe Sampling Method:
    Whatman smear tab filter
    analytical solvent: Distilled water.Carcinogenic classification:

    NTP: Known to be a human carcinogen (sulfuric acid contained in strong inorganic acid mists)
    IARC: Group 1 (carcinogenic to humans)
    EPA: Not listed
    EPA Inhalation Reference Concentration (RfC): Not established

    ATSDR Inhalation Minimal Risk Levels (MRLs): Not established

    NIOSH IDLH concentration: 15 mg/m3

    Notes on other potential health effects and hazards:

    Dental erosion due to sulfuric acid exposure is generally not detected in the maxillary teeth and is concentrated in the anterior mandibular teeth (Suyama et al. 2010).
    One of the 10 occupational fatalities reported to poison control centers in 2005 was due to sulfuric acid ingestion (Lai et al. 2006).
    The National Toxicology program concluded that inhalation of mists of strong inorganic acids caused cancer of the larynx and lung. (NTP 2011).
    Partial reference list:

    ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) – Sulfuric Acid. 2016.
    IARC Monographs Strong Acid Mists Containing Sulfuric Acid, 100-F, 2011
    Lai, M.W., et al.: 2005 Annual Report of the American Association of Poison Control Centers’ National Poisoning and Exposure Database. Clinical Toxicology. 40: 803-932, 2006.
    NTP Report on Carcinogens Strong Inorganic Mists Containing Sulfuric Acid
    NIOSH: Occupational Health Guideline for Sulfuric Acid. September 1978.
    NIOSH/CEC/IPCS: International Chemical Safety Cards – Sulfuric Acid. February 10, 2000.
    Suyama, Y., Takaku, S., Okawa, Y, Matsukubo, T.: Dental erosion in workers exposed to sulfuric acid in lead storage battery manufacturing facility. Bull Tokyo Dent Coll. 51(2):77-83, 2010.
    Additional Information
    Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 1830 137; 1831 137 (fuming); 1832 137 (spent).
    NIOSH: Pocket Guide to Chemical Hazards – Sulfuric Acid.
    NIOSH: Registry of Toxic Effects (RTECS) Identification Number – WS5600000.

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