[Jewelry making - Article 00200] - Re: [Orchid] Transite/Heat Resistant Surface

[Allan Heywood]

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    I discovered that have re-engineered transite and made it completely
    safe for the studio. 

    G'day Karen - I seem to be forever playing the Devil's advocate -
    it's not a role I enjoy, but  .... if the material you are talking
    about is Transite HT then it's a calcium silicate insulating board -
    here's a quote from the MSDS issued May 3 2002: 

    "Primary Routes of Entry: Via respirable dust to the lungs and
    respiratory system and via coarse dust and particulate to the eyes. 

    Primary Target Organs: Lungs, respiratory system and eyes. 

    Potential Health Effects: 

    Inhalation: Long term overexposure to respirable crystalline silica
    dust may cause permanent and irreversible lung damage including
    silicosis. 

    Skin Contact: Possible dryness or irritation resulting from long
    term exposures to product dust. 

    Eye Contact: A mechanical irritant which can cause moderate to
    severe eye irritation. 

    Ingestion: Non-hazardous when ingested. Potentially a mild irritant
    to the GI tract if excessive quantity is ingested. 

    Medical Conditions Aggravated by ExposuRe: Pre-existing chronic
    upper respiratory and lung diseases such as, but not limited to,
    bronchitis, emphysema and asthma. 

    Carcinogenicity: This product contains crystalline silica which is
    classified as a class 1, human carcinogen by IARC, as a suspect
    carcinogen by NTP and as a possible select carcinogen by OSHA." 

    All of which just means that you don't saw it, grind it, file it or
    otherwise disturb the surface, not that you don't use it! 

    Just that you are aware that there are potential hazards and use it
    accordingly. 

    MSDS sheet is heRe: http://www.bnzmaterials.com/msds/msdsht.html 

cheers
Al Heywood

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