Metol

Encyclopedia : M : ME : MET : Metol

**Properties**
General
Name	p-(methylamino)phenol sulfate
Alternate name	4-(methylamino)phenol sulfate

Chemical formula	(C₇H₁₀N O)₂ SO₄
Formula weight	344.38 amu
Synonyms	Metol,Elon
CAS number	55-55-0
phase at room temperature	solid
Melting point	260°C
UN number	2811

Metol (or Elon, in Eastman Kodak parlance) is a developing agent used in photographic developers. In its pure form, it is a solid rather light-sensitive chemical which is the sulfate salt of para-(methylamino)phenol.

Because it has been in use for this purpose for over 100 years and often by amateur photographers, there is a wide body of evidence about the health problems that contact with Metol can cause. These are principally local dermatitis of the hands and fore-arms as well as some evidence of sensitization dermatitis in which subsequent exposure triggers of a chronic condition that is resistant to medication. The use of Metol in highly caustic solutions and the presence of other materials in dark-rooms that have been implicated in dermatitis such as Cr(VI) salts, may exacerbate some health impacts.

External Link

[ChemExper.com - Metol]

For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].

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