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Home Products Manufacturers Ingredients Health Effects
Product Information
Product Name: Johns Manville Microlite L Building Insulation
Form: fiber
Product Category: Home Maintenance » building » Insulation
Customer Service: 0
Date Entered: 2005-01-14
Related Items: Products with similar usage in this database
Manufacturer: Johns Manville Insulation Group
Address: P.O. Box 5108
City: Denver
State: CO
Zip Code: 80127
Date Info Verified: 2017-02-28
Related Items: Products by this manufacturer
The following information (Health Effects, Handling/Disposal, and Ingredients) is taken from the product label and/or the (Material) Safety Data Sheet, (M)SDS, prepared by the manufacturer. The National Library of Medicine does not test products nor does it evaluate information from the product label or the (M)SDS. (What is an (M)SDS?)
Health Effects
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Acute Health Effects: From MSDS
Breathing dust from this product may cause a scratchy throat, congestion, and slight coughing. Getting dust or fibers on the skin, or in the eyes may cause itching, rash, or redness.
Target Organs: Nose (nasal passages), throat, lungs, skin, eyes.
Primary Routes of Entry (Exposure): Inhalation (breathing dust), skin, and eye contact.
Potential Health Effects
Inhalation: Irritation of the upper respiratory tract (scratchy throat), coughing, and congestion may occur in extreme exposures.
Skin: Temporary irritation (itching) or redness may occur.
Absorption: Not applicable
Ingestion: This product is not intended to be ingested (eaten). If ingested, it may cause temporary irritation to the gastrointestinal (digestive) tract.
Eyes: Temporary irritation (itching) or redness may occur.
Medical Conditions Aggravated by Exposure
Pre-existing chronic respiratory, skin, or eye diseases or conditions.
Chronic Health Effects: From MSDS
Refer to section on Carcinogenicity.
Carcinogenicity: From MSDS
Antimony trioxide causes pneumoconiosis in humans. Antimony trioxide was tested for carcinogenicity by inhalation exposure in male and female rats of one strain and in female rats of another strain. It caused a significant increase in the incidence of lung tumors in females in both studies. No lung tumors were seen in male rats. Both of these studies provide only qualitative evidence of carcinogenicity of antimony trioxide in rats. In 1994, Groth et al., conducted a third study using a more rigorous inhalation protocol. Rats in this study were exposed to several concentrations of antimony trioxide but did not develop cancer.
Thus, there is only inconsistent evidence for the carcinogenicity of antimony trioxide by the inhalation route in rats. Technical limitations or exposure to high particle concentrations seriously limit interpretation of the two earlier studies. USEPA and CAL EPA concluded that these studies are inadequate for use in quantitative cancer risk assessment. According to US EPA's recently proposed cancer risk assessment guidance, a margin of exposure (MOE) analysis is more appropriate when, as with antimony trioxide, the carcinogenicity of a chemical may be a secondary effect of toxicity or of an induced physiological
change. The MOE approach was adopted after conferring with CAL EPA scientists involved in the Proposition 65 program who suggested using US EPA's Proposed Guidance for Carcinogen Risk Assessment. An independent laboratory conducted a risk analysis using the MOE approach; the results indicated the potential levels of exposure to antimony trioxide in JM products pose no significant cancer risk to the end-user of these products.
MSDS Date: 2008-04-16
Handling: From MSDS Use protective equipment (see below) when handling uncontained material. Storage ProceduresWarehouse storage should be in accordance with package directions, if any. Material should be kept dry, and protected from the elements.Personal Protective Equipment: Personal Protective Equipment: Eyes/FaceSafety glasses with side shields are recommended to keep dust out of the eyes.Personal Protective Equipment: SkinLeather or cotton gloves should be worn to prevent skin contact and irritation. Barrier creams may also be used to reduce skin contact and irritation caused by fiber glass.Personal Protective Equipment: RespiratoryA respirator should be used if ventilation is unavailable, or is inadequate for keeping dust and fiber levels below the applicable exposure limits. In those cases, use a NIOSH-certified disposable or reusable particulate respirator with an efficiency rating of N95 or higher (under 42 CFR 84) when working with this product. For exposures up to five times the established exposure limits use a quarter-mask respirator, rated N95 or higher; and for exposures up to ten times the established exposure limits use a half-mask respirator (e.g., MSA's DM-11, Racal's Delta N95, 3M's 8210), rated N95 or higher. Operations such as sawing, blowing, tear out, and spraying may generate airborne fiber concentrations requiring a higher level of respiratory protection. For exposures up to 50 times the established exposure limits use a full-face respirator, rated N99 or higher.Personal Protective Equipment: GeneralWear a cap, a loose-fitting, long-sleeved shirt and long pants to protect skin from irritation. Exposed skin areas should be washed with soap and warm water after handling or working with fiber glass. Clothing should be washed separately from other clothes, and the washer should be rinsed thoroughly (run empty for a complete wash cycle). This will reduce the chances offiber glass being transferred to other clothing.
Disposal: From MSDS This product, as supplied, is not regulated as a hazardous waste by the U.S. Environmental Protection Agency (EPA) under Resource Conservation and Recovery Act (RCRA) regulations. Comply with state and local regulations for disposal. If you ar
Ingredients from (M)SDS/Label
ChemicalCAS No / Unique IDPercent
Foil/kraft, kraft, FSK, polyethylene, PSK, and various metal facings000000-51-40-6.7
Acrylic thermoset binder000000-51-50-15
Antimony trioxide001309-64-4>0.1
Urea, polymer with formaldehyde and phenol025104-55-60-15
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