Kodak D-78 (Athenon is glycin) Asenon

Hello I could not find a section of the website for Japanese users if there are many at all…my question is for the Kodak D-78 formula published by EKC Japan in their book from 1938.

It requests “アセノン” / “Asenon” or “Asenone”

I tried searching Google but it must be an obscure trade name by Kodak or chemical manufacturer.

I tried to find a printed D-78 formula in English but not found so far. I saw the formula given online in some places but they are different from what I have so I can’t effectively compare them for a better lead.

The formula is:

Water 750ml

Sodium Sulfite Anhydrous 3g
無水亜硫酸ソーダ

Asenon 3g
アセノン

Sodium Carbonate Anhydrous 6g
無水炭酸ソーダ

Water to make 1L


みなさんへアセノンが何ですか。このD-78写真処方は読んでしたにアセノンが中です。お邪魔しました

Thank you for the help.

I have a 1941 Kodak book titled Elementary Photographic Chemisty and the formula in it for D78 is the same as yours, except that "Asenon" is called Athenon, which is a trade name for Glycin.

As far as I know the only place to get Glycin now is the Photographers Formulary. Note that Glycin and Glycine are completely different chemicals.

Given the formula reported in this thread, it may be another trade name for glycin: https://www.photrio.com/forum/threads/kodak-d78-developer.16477/

Great minds think alike

My 2-second Google search turned up this:

The code "D-78" most commonly refers to
a specific glycin-based photographic developer formula used in black-and-white film processing. It was an official Kodak formula listed in their handbooks, and "glycin" was often referred to as "Athenon" in Kodak's internal terminology

Kodak D-78 Developer Formula

D-78 is known for being a slow, clean-working developer that provides low contrast and has good keeping properties. It was particularly popular as a paper developer, but was also noted as an excellent developer for film (e.g., FX2, Edwal 10, or D-78).

A common formulation for Kodak D-78 is as follows:

• Water (at 125°F/52°C): 750 ml
• Metol: 7 g
• Sodium Sulfite (anhydrous): 70 g
• Paraphenylenediamine: 7 g
• Glycin: 7 g
• Cold water to make: 1 liter

The chemicals should be dissolved in the order listed, making sure the metol is fully dissolved with a pinch of sulfite before adding the other ingredients.

Best,

Doremus

I have no idea where the above formula comes from but it doesn't match D-78 in Kodak's books. More AI nonsense I suspect.

Thank you thank you!

Yes correctly translating glycin from Japanese was a pain in the head last week. I need an industry/medical dictionary.

In case anyone in the future stumbles upon this thread:

Glycin グリシン
Glycine アミノ酢酸　(アミノさくさん)

These days we are better off using CAS numbers to identify specific chemicals. Glycin's number is CAS 122-87-2

Perfect I will add a column to my vocabulary spreadsheet for CAS numbers. Some old formula books would give the chemical makeup but the list is never exhaustive.