GardenBanter.co.uk - View Single Post - While rooting through the shed:-

Rusty Hinge[_2_] · 06-06-2010, 08:25 PM posted to uk.rec.gardening

wrote:
In article ,
Jeff Layman wrote:
"RG" wrote in message
news
A very strong solution will certainly etch glass.
Do you have a reliable reference for this, please? Google most certainly
comes up with quite a few hits for "phosphoric acid" and "etch glass", but I
have been through the first 40 and found nothing which substantiates that
statement unequivocally. I have always understood that the only chemicals
which attack glass are (1) hydrofluoric acid (2) strong alkalis.

That is definitely wrong. Glass is etched naturally in the soil, for
a start.

Mainly, I believe, as a result of being slowly dissolved by water (which
will do that to most things to some extent) and when fluorides are
present in the soil.

--
Rusty