While developing a film is a small sign of modern life, and most people are at least aware of the fact that film can be developed in a darkroom, the process of the film is less understood.
What Chemicals Needed For Developing Film?
All different methods of developing film, rely on a number of chemicals.
- Hydroquinone
This chemical is widely used as a developer to be the primary base for the first step on developing film. While usually the first process use darkroom, therefore most likely on this time there is numerous chemical combination are in use.
This chemical also in the List Of Chemicals Used In Printing due to its important role to create a photographic developer or fixer solutions in printing or photos.
However, the chemical substance also poses risk to human health, particularly body parts that come in contact directly during the process.
Moreover, it contains acidic salt solutions that highly irritate the eyes if you forget to use the proper safety mask and tools. Furthermore, studies also suggest dermatitis issue due to this substance exposure to human skin in a long period of time.
2. Dimezone
What chemicals needed for developing film? After images have been captured on the film, it is not visible to the naked eyes until the developer brings out the silver halides from it into the film. These pictures are stored in negative, while the brighter parts of the picture remain dark.
Meanwhile, after the developing process, the darker parts of the images will become brighter. this process needs Dimezone or 4-hydroxymethyl-4-methyl-1-phenyl-3-pyrazolidone that is milder than other developer agents.
As a developer to help the film develop well it needs a mixture of this substance and water. The dozes have to be precise to have the right effects. Moreover, skin issue immerges if come in direct contact with this chemical. That is Why SHould An Individual Working With Chemicals Understand The Hazard and take the necessary precautions.
- Phenidone
The 1-phenyl-3-pyrazolidinone) is an organic compound that poses as a greener and safer choices developer in the developing film process. It needs to have very high acidity to help negatives to develops.
Therefore, other chemicals such as sodium carbonate or sodium hydroxide are often added to the mix. The combination of these chemicals creates the right amount of acid to develops films.
A small dose of Phenidone is five to ten times powerful than other developers. Moreover, it has very low toxicity and does not lead to any skin issues such as irritation, burning sensation or dermatitis upon skin direct contact.
- Acetic Acid
After the developer agent manages to develop the film then the process needs to stop in the right time not to spoils the frame. Therefore, the next developing film process is using Acetic Acid as a stop bath.
If you see in films where the frame is dipped in liquid chemical, this substance comes to the picture after the bathing process end. This allows the picture not to get ruin or get overexposure. So, to a certain degree, the developer is replaced with a stop bath. The stop bath act as a neutralizer for the developing film process and stops the film from becoming overexposed.
Acetic Acid washes away the developer agent quicker and more thorough. However, the substance is not safe that even though there are numerous Uses Acetic Acid Daily Life the direct contact from the chemical can cause severe skin issues.
- Ammonium Thiosulfate
Ammonium thiosulfate acts as a fixer in the final process of developing films. Moreover, the substances wash away the unwanted chemicals faster, easier and better than other fixers agent out there.
Furthermore, the compound also maintains the true color even if you overmix the images (fix for too long a time), there is a chance they will bleach your prints (but not a big chance). It mainly removes the unexposed silver halides in the film.
However, the chemical is not without danger to the environment or human. This end process in developing film is a harmful chemical that produces Chemicals Combinations We Should Never mix that it can be dangerous. Especially during film developing where the mixing chemical is done often.
Moreover, if pose threads to the environment due to its soluble in acetone, alcohol and ether substances. It is very toxicity to human that if people inhale it, it can create respiratory system issues, skin irritation. and various illness.
- Paraphenylene Diamine
The film needs color to develop more vivid and realistic images. Unless your pictures are intended come in black and white. The color adding process gives a bit of that extra to any pictures. The paraphenylene diamine exposes the film’s silver halides, and also pose as a “dye couplers,” that produce pictures with different colors.
The beautiful result that this chemical adds into the picture is not equal as its effects on animals and human that come in contact with this substance. This summed up the question Why Should Chemicals Not be Released In Drain, it can pollute the water and create various harm.
Studies suggest this substance to have some kind associations with non-Hodgkin’s lymphoma, multiple myeloma, acute leukemia, and cancer. Although those studies require consistently observed across studies, people need to be aware of its danger.
In the processing of developing film, plate or papers, there are more than one chemicals that convert the latent image to a visible image. The conversion occurs within several processes with calculated dose and mixture that with one single count can ruin the images or worst, harm the person that performs the process.
Therefore, it is a very important Reasons Why Should Chemicals Be Disposed Of Properly. Moreover, People that work with chemicals to follow the proper safety procedures and safety requirements.