Isothiazolinones, specifically a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 2-methyl-4-isothiazolin-3-one (MIT), are widely used as preservatives in various industries due to their broad-spectrum antimicrobial properties. Here's a detailed look at the points you've mentioned:

1. Composition: It is a mixture of two isothiazolinone compounds, CMIT and MIT, which are both effective as biocides.

2. Solubility: Isothiazolinones are miscible with water, which means they can dissolve in water in all proportions without separation.

3. Efficiency and Safety: They are described as having high efficiency, broad-spectrum activity, and low toxicity. The term "non-toxic emerald green modifier product" seems to be a misnomer or a specific trade name, as the toxicity of isothiazolinones is a topic of ongoing discussion, particularly in the context of their use in consumer products where they can cause allergic reactions in some individuals.

4. Industrial Applications: Isothiazolinones are used as biocides in a variety of industrial settings, including:

• Industrial cooling water systems

• Wastewater treatment

• Building materials

• Architectural coatings

• Adhesives

• Textiles

• The oilfield industry

• Paper industry

• Concentrated feed production

• Power generation

• Green fertilizers

• Pesticides

• Cutting oils

• Leather processing

• Detergents

• Cosmetics

5. Biocidal Mechanism: The bactericidal effect of isothiazolinones is achieved by disrupting the cell membrane of bacteria and algae, causing leakage of essential cellular components, which leads to cell death kairuiwater.com.

6. Advantages: They offer several advantages such as:

• High biocidal efficiency

• Good degradation characteristics, meaning they break down in the environment

• No residual effects, implying they do not leave harmful residues

• Safety in operation, although this can depend on the specific application and exposure levels

• Good compatibility with other chemicals, including chlorine and various surfactants

• Good stabilization properties, which can help maintain the quality of products over time

• Low operational costs

7. Compatibility and Dosage: Isothiazolinones can be mixed with chlorine and a range of surfactants without losing their effectiveness. At higher dosages, they are also noted for their ability to strip bio-sludge, which can be beneficial in certain applications like industrial water treatment systems.

It's important to note that while isothiazolinones are effective biocides, their use in certain applications, particularly in consumer products, has been restricted in some regions due to concerns about their potential to cause skin sensitization. As with any chemical, proper handling and adherence to safety guidelines are crucial to ensure the safety of both workers and consumers.