Traditional Culture Encyclopedia - Photography major - What does silver sulfide mean?

What does silver sulfide mean?

What is silver sulfide and what is the role of silver in it?

Silver sulfide is a chemical substance with the molecular formula of Ag2S, which has a black solid structure. It is an important silver mineral in nature and also a man-made material. Silver sulfide is widely used in photography industry. As an exposure material, its photosensitivity is stable and reliable, so it is widely used in the preparation of photographic paper and mask.

Although silver sulfide is a compound, the silver ions in it play a very important role in the photography industry. In the exposure process of photography, silver ions receive the exposed light and undergo a reduction reaction, forming a black and white area between the exposed surface and the unexposed surface. This process is called the formation of silver image, so silver is the most important element in silver sulfide.

What are the factors that affect the silver content in silver sulfide?

The content of silver in silver sulfide is related to its purity, preparation process and raw material quality. In the process of preparing silver sulfide, if the purity and quality of raw materials are guaranteed, the content of silver in the prepared silver sulfide will increase accordingly. In addition, the process of preparing silver sulfide will also affect the content of silver sulfide, and different processes may lead to differences in the content of silver sulfide prepared.