CASEIN- ▸ Adhesives: Binder in woodworking and paperboard adhesives.
- ▸ Paper coatings: Pigmented coatings for high-quality paper.
- ▸ Paints/binders: Binder in paints and coatings.
- ▸ Protective colloid: Emulsifying agent and protective colloid.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Casein (CAS 9000-71-9) is the principal phosphoprotein of milk; the acid grade is precipitated from skim milk with acid. Industrial uses include adhesives, paper coatings, paints, casein plastics, and man-made fibers, and it serves as a protective colloid, emulsifying agent, and binder.
Frequently Asked Questions
What is acid casein used for industrially?
Acid casein (CAS 9000-71-9) is used as a binder in woodworking and paperboard adhesives, in pigmented coatings for high-quality paper, and as a binder in paints. It also functions as a protective colloid and emulsifying agent, and is a feedstock for casein plastics and man-made fibers.
What is acid casein made from?
Casein is the principal phosphoprotein of milk. The acid grade is precipitated from skim milk by acidification, then washed and dried to an industrial powder. It is classified under HS 3501.10.
How does acid casein differ from rennet casein?
Acid casein is precipitated by lowering pH (acid coagulation), whereas rennet casein is coagulated enzymatically; the two differ in mineral content and solubility behavior. Acid casein is typically converted to caseinates or used directly in adhesives, coatings, and binders. Specify your application so we can confirm the appropriate grade.
Is acid casein soluble in water?
Acid casein itself is largely insoluble in water at its isoelectric region but readily dissolves when neutralized with alkali to form soluble caseinates, which is how it is activated as a binder and protective colloid. Dissolution conditions depend on the alkali and grade used.
How is industrial acid casein supplied and documented?
It is supplied as a dried industrial-grade powder in bags and supersacks, with a Certificate of Analysis and Safety Data Sheet (SDS) per lot. Request a bulk quote with your required mesh/particle specification and volume.