What is the Biocide Chemistry?

Bioicde Chemistry Are Widely Used Of The Preservations In The Paint & Coating, Polymer Emulsion, Construction，Adhesive，Pigment And Mineral Slurry，Ink & Fountain Solution，Textile，Paper, Cooling, Oilfield，Leather，Personal Care Industry Etc.

1. What is Preservations?

Preservations is the process that prevent microbial deterioration of materials by which chemical agents and thus prolong the expected lifetime of products.

2. What is the mode of action of biocids?

Depending on the mode of action, two groups of antimicrobial agents can be differentiated:

• Physical Interaction

Membrane-active Agents

– Alcohols

– Phenols

– QACs

– Acids

• Chemical Interaction

Electrophilic Agents

– Aldehyde and aldehyde releaser (e.g. EDDM, TMAD)

– Activated halogen compounds (e.g. CMIT/MIT, Bronopol)

3. What is the Point of Attack Of The Biocides ?

Physical or chemical interaction of the biocide with the microorganisms lead to

– Destruction of cell walls

– Destruction of cell proteins e.g. DNA

– Inactivation of eg enzymes in the cell

4. What is the Required features of biocides?

• High efficacy at a broad spectrum of microorganisms

– Bacteria

– Yeasts

– Moulds

• Cost-efficacy

• Easy handling / easy to incorporate

• Stability

• pH-tolerance

• Low toxicity

5. How to select the suitable Active Ingredient

Product	Advantages	Disadvantages
Formaldehyde	Cost-effective Fast action Wide spectrum of effect	H317 Labelling (≥1000 ppm) Strong, pungent smell Formaldehyde-discussion
Bronopol	Fast action Good toxicity-profile No formaldehyde-release	Only active against bacteria Risk of yellowing pH-limitation (< 8.0) Possible formation of nitrosamines in the presence of secondary amines
CMIT/MIT	Very fast action Wide spectrum of effect	H317-labelling (≥ 15 ppm) No long term-protection pH-limitation (< 8.5)
BIT	Very stable Wide pH-range Low toxicity	H317-labeling (≥ 500 ppm) Slow speed of action Weakness vs. yeast/mould Gap against Pseudomonas
MIT	Wide pH-range Low toxicity / good labeling	Weakness vs. yeast/mould Slow speed of action Higher use-levels / costs
OIT	Good long term efficacy	H317-labeling (≥ 500 ppm) Only active against moulds

More Bioicde Chemistry details or info, or need to customize according to your requirement, contact us.

SINOBIO focus on the biocide industry for around 20 years, both the biocide raw material and formulated biocide can be supplied. For more information, please feel free to contact with us at any time.