### salt | halide:

Iodide
* All iodides are toxic if taken in excess.
* Most iodides are colorless or reddish-yellow and are weak reducing agents.
* are chemical compounds
  - more reactive than bromides which are more reactive than chlorides
  - only toxic in large amounts
* become colored when mixed with oxidizing agents.
* react with acidified manganese dioxide or chlorine to make iodine.
+ Iodine, Properties, Chemical compounds: Halogens :: Chemical elements :: Nonmetals
  * This is typical of the halogens except for fluorine. Most organic iodine compounds are in the -1 oxidation state. Most iodides are colorless or reddish-yellow and are weak reducing agents. They are both oxidizing agents.
  * Potassium iodide is one of the most common iodides. Iodides are normally colorless but turn yellow after being in air because the iodide is oxidized to iodine. Iodides react with acidified manganese dioxide or chlorine to make iodine. Iodine monochloride is a red or brown liquid. Iodine trichloride, as well as iodine trifluoride, are yellow solids. Iodates like potassium iodate are colorless solids similar to chlorates. Iodic acid is the only stable oxidizing halogen acid. Chloric acid, by comparison, is very unstable and dangerous
  - Safety
  * Iodine can irritate skin. Its vapors are irritating to the lungs. It is less toxic than the other halogens, though. 2-3 grams of iodine can kill. Iodides are only toxic in large amounts
  - Uses
  * Erythrosine is a food coloring that has iodine in it. Iodine can be used to make illegal drugs so it is restricted in some areas. Iodine can be used as a test for reducing agents. Iodine turns colorless when mixed with a reducing agent. Iodine also turns black when mixed with starch. Iodides become colored when mixed with oxidizing agents

Silver halide
* are sensitive to light
  - the basic image-forming elements of photographic materials
* compound of silver and halogens.
* is the material that records what is to be seen in the photograph.

### salt:

Hypochlorite
* are chemical compounds
  - most reactive, while perchlorates are the least reactive
  - solid or liquid chemicals used to whiten textile products and other materials
* is salt
* react with acids to produce chlorine.
* yield an aqueous solution of hypochlorous acid that is the true disinfectant.
+ Chlorine, Properties, Chlorine compounds: Chemical elements :: Halogens
  * The -1 state is most often in chloride. Chlorides are not reactive. Only one is common. Hypochlorites are most reactive, while perchlorates are the least reactive.
  * Hypochlorite' is an ion. It can be found in household bleach, sodium hypochlorite. It is unstable, meaning that it breaks down easily. Hypochlorites react with acids to produce chlorine. It is a strong oxidizing agent. They are the salts of hypochlorous acid.

### salt | hypochlorite:

Sodium hypochlorite
- disinfectants
  - hypochlorites
  - inorganic compounds
* becomes less toxic with age.
* can cause blistering of the skin and severe deep burns to the eyes.
* is added for disinfection
  - to drinking water at the secondary disinfection stations
  - an antimicrobial
  - inherently an unstable compound
* is manufactured by dissolving chlorine in sodium hydroxide solution
  - mixing chlorine with sodium hydroxide and water
* is the chemical name for the common name bleach
  - most common method for controlling the bio-fouling of cooling systems
* substitutes for in vitro plant propagation.