Generalsulfatesulfate

Properties

Name	p-(methylamino)phenol
Alternate name	4-(methylamino)phenol
Chemical formula	(C7H10NO)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

Photographic chemicals | Phenols

Metol