Clayton Metol (Elon) - 1 Lb.
Metol(Elon) Developing Agent is used as a developing agent, usually with hydroquinone, but sometimes by itself as in Kodak D-23.
- Although metol is easily soluble in water, it is not soluble in a strong sodium sulfite-solution. It does dissolve readily in a weak solution of sulfite. Metol bulds image detail rapidly, and it keeps well in solution.
- Metol has low-fogging tendencies and responds well to the addition of bromide, giving a very clean-working developer without any staining of film or fingers.
- The energy of the developer is only slightly affected by low temperature and is only slightly reduced by the addition of bromide.
- Metol alone with either sodium or potassium carbonates give a rapid working developer when the alkalies are in high concentration, but the speed of the development can easily be controlled by dilution.
- The use of caustic alkali (e.g., sodium hydroxide) is not recommended with metol as there is a tendency to excessive fog. When used with sulfite alone, without additional alkali (Kodak D-230, metol provides a slow-working, fine-grain developer. This type of film developer often works well with a mild alkali, such as borax, which accelerates the rate of development without increasing the grain size appreciably (Kodak D-25).
- Developers containing metol as the sole developing agent are not widely used but metol with hydroquinone provides the most widely used developer combination.
| Synonyms |
Monomethyl para-aminophenol sulfate Para-Methylaminophenyl sulfate Elon(Kodak) Metol(Agfa & others) Claritol or Veritol(Defender) Enol Genol Rhodol(DuPont) |
| Appearance | White to slightly yellowish powder |
| Uses | Developing agent (usually with hydroquininone), but sometimes by itself, as in Kodak D-23 |
| Chemical Formula | (C7H9NO)2SO4 |
| Notes | Caution: Has a reputation of causing skin poisoning (a painful rash that looks and feels like poison oak). This poisoning usually occurs after being exposed to the substance over a period of years, but in some cases can happen even sooner. This can be prevented by wearing gloves. |
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