Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,985   Posts: 1,523,965   Online: 834
      
Results 1 to 8 of 8
  1. #1

    Join Date
    Oct 2008
    Shooter
    35mm RF
    Posts
    6

    Sodium Ascorbate for PCTEA??

    I got plenty of sodium ascorbate but only a little ascorbic acid. So can i substitute ascorbic for ascorbate?

  2. #2
    MikeSeb's Avatar
    Join Date
    Jun 2005
    Location
    Prospect (Louisville), KY, USA
    Shooter
    Medium Format
    Posts
    1,062
    Yep. Can't recall the conversion factor right off hand; you should be able to google it if someone doesn't chime in here.
    Michael Sebastian
    Website | Blog

  3. #3
    BradS's Avatar
    Join Date
    Sep 2004
    Location
    S.F. Bay Area, California
    Shooter
    Large Format
    Posts
    3,948
    I thought that there was an alkali involved...

    something like...

    sodium hydroxide + ascorbic acid ---> sodium ascorbate

    or, maybe it was...

    Borax (sodium something borate) + ascorbic acid ---> sodium ascorbate

    anyway, I think there is more to it than a simple multiplicative factor.

  4. #4

    Join Date
    Sep 2002
    Location
    Willamette Valley, Oregon
    Shooter
    Medium Format
    Posts
    3,684
    Quote Originally Posted by LeNoirPhotog View Post
    I got plenty of sodium ascorbate but only a little ascorbic acid.
    So can i substitute ascorbic for ascorbate?
    Can you substitute ascorbate for ascorbic, or visa versa for
    that matter? NO way. One is quite acid while the other
    is more nearly neutral. Dan

  5. #5

    Join Date
    Sep 2004
    Location
    Toronto, Canada
    Shooter
    Multi Format
    Posts
    587
    Quote Originally Posted by LeNoirPhotog View Post
    I got plenty of sodium ascorbate but only a little ascorbic acid. So can i substitute ascorbic for ascorbate?
    No, not without titrating the pH of your working developer back down to its expected level before use.

  6. #6

    Join Date
    Oct 2008
    Shooter
    35mm RF
    Posts
    6
    OK thanks everyone

  7. #7
    gainer's Avatar
    Join Date
    Sep 2002
    Posts
    3,726
    Images
    2
    Quote Originally Posted by LeNoirPhotog View Post
    OK thanks everyone
    Moreover, I doubt you'll get much sodium ascorbate to dissolve in TEA.
    Gadget Gainer

  8. #8

    Join Date
    Nov 2004
    Posts
    1,122
    cas 134 03 2 sodium ascorbate won't dissolve in TEA enough to make PC-TEA, see this thread:
    http://www.apug.org/forums/forum37/3...20-format.html



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin