Harmful chemicals

Discussion in 'The Darkroom' started by ryunin, Feb 1, 2010.

  1. ryunin
    Offline

    ryunin New Member

    Joined:
    Jan 17, 2010
    Messages:
    86
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Prague, the Czech Republic
    Gallery:
    Ratings:
    +0 / 0
    My Photos Are NOT OK to Edit
    I know there is a detailed thread describing all kinds of chemicals used in the darkroom and how they may cause health problems, but that is lots of chemical stuff for me. Could someone tell me if the fixer solution (ammonium thiosulfate solution) or the developing solution (D 76 1:1)should not come in touch with hands or which one is more agressive for skin? My tank leaks and after last developing my hands itched a bit. I am going to buy gloves.

    Oh and I hear some of the chemicals should not be end up in the sink or toilet.
  2. compur
    Offline

    compur Well-Known Member

    Joined:
    Mar 6, 2008
    Messages:
    2,411
    Likes Received:
    290
    Trophy Points:
    83
    Location:
    L.A.
    Gallery:
    Ratings:
    +301 / 0
    D-76 (as well as many other developers) contains metol which can cause an
    allergic reaction (painful rash) with some people over a long period of skin
    contact though most people have no problem with it. If you are concerned
    then avoid skin contact or avoid metol developers. Non-metel developers
    include HC-110, XTol and many others.

    I'm not aware of any particular problem with fixer stock solutions but all
    basic safety measures (proper ventilation, eye protection, etc) should be
    observed with all darkroom chemistry.
  3. Soocom1
    Offline

    Soocom1 New Member

    Joined:
    Feb 27, 2006
    Messages:
    511
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Southwest US
    Gallery:
    Ratings:
    +1 / 0
    My Photos Are NOT OK to Edit
    First: http://87.248.52.97/essecoadmin/pdf/ss/eng/AmmoniumThiosulfate.pdf
    That is the pdf of the MSDS for the stuff.
    Second: keep in mind that thiese are for a lack of a better term, a form of natural salts. (Not table salt). They break down over time, and though are not too good for septic systems, should not really harm the sewage systems. The real problem is the silver. Because it is listed as a heavy metal, that CAN be the problem with dumping the stuff. But keep in mind what your dumping is VERY, VERY minor compared to the other stuff dumped in the sewage system, and it will get filtered by the local warter athourity. As for skin reactions: many people do and many dont have reactions. Dont sweat over it, just wear gloves and go slow. keep good venalation and your set to go.

Share This Page

Search tags for this page
are film developing chemicals toxic
,
darkroom chemicals dangerous
,

darkroom chemicals side effects

,

harmful substances pictures

,
how toxic are darkroom chemicals
,
photography chemicals dangers
,
picture harmful substance
,
picture of harmful chemicals
,

pictures of harmful chemicals

,

pictures of harmful substances