A user over on Home Improvement asked How to deal with broken compact fluorescent (and its mecury) without breaking the bank? with emphasis on the mercury which such lamps contain.
I had a vague recollection of something I'd heard a few years ago and a quick search led to me leaving a comment:
Gloves to avoid getting a cut are a good idea as the phospor-containing coating on the inside of the glass can stop blood from clotting: The dangers from phosphor-coated glass of broken CFL bulbs.
Another user pointed out:
this is the first I've read about the anti-clotting effect of phosphors, and I can't find an independent source. Do you know of one?
So I went looking for more information and it seems that all articles I can find on the Internet mentioning the danger of the phosphor coating have wording derived from The Fluorescent Lighting System, which states:
The biggest immediate injury threat from a broken lamp is from the phosphor-coated glass. If cut with fluorescent lamp glass, any phosphor that gets into the wound is likely to prevent blood clotting and will interfere with healing.
I have contacted the author of that article to ask if they can supply a reference for that information.
An article in Scientific American mentions only the mercury and not the phosphors: Are Compact Fluorescent Lightbulbs Dangerous? I would have thought that SA would mention a problem with the phosphors if there was one.
There is anecdotal evidence at Cut by a broken CFL that it isn't that harmful (in the bleeding sense), and contributor retiredsparktech there suggests that it was arsenic-containing phospors which were to blame
So, are, or at any time were, the phosphors in fluorescent lamps anticoagulant, and if so would it be to a dangerous extent?