How the library works, where the data comes from and how to use it safely.
Chem Lab Worx is a free reference library on the chemistry of coatings. It profiles the isocyanates, polyols, amines, epoxy resins, acrylics, solvents, pigments and additives used in protective coatings, and adds guides, standards summaries and research digests that connect them.
Applicators, formulators, specifiers, inspectors and students: anyone who needs a clear explanation of how coating chemicals behave and why it matters on the job.
Yes. Every page can be read free of charge, without an account.
Compounds are grouped into eight families. Reactive families are labelled by where they usually sit in a two-component system (isocyanates on the A-side, polyols and amines on the B-side, epoxy resins as Part A), while formulation families cover binders, carriers, solids and modifiers. Each profile links to related guides, standards and other compounds in the same family.
Use the search in the site header or the filter on the Chemical Library index. You can search by full name, abbreviation or CAS number.
Identity data such as CAS numbers and formulas are checked against supplier Safety Data Sheets, technical data sheets and public chemical databases such as PubChem. Standards pages name the issuing body and designation, and research digests cite the original peer-reviewed papers, with DOI links wherever one exists.
No. Values such as NCO content, equivalent weight, OH number or boiling point are typical figures for common grades. Commercial products vary, so always use the values on your supplier’s data sheet for calculations and specifications.
No. Handling notes are short summaries. The Safety Data Sheet for the specific product, the manufacturer’s instructions and your local regulations always take priority. Start with the isocyanate safety guide for an overview.
NCO % is the weight percentage of isocyanate groups in an isocyanate. OH number (mg KOH/g) expresses the hydroxyl content of a polyol. AHEW, the amine hydrogen equivalent weight, is the mass of curative that carries one reactive N–H hydrogen, and EEW, the epoxide equivalent weight, is the mass of resin that contains one epoxide group. Together they set stoichiometric mix ratios; see the mix-ratio guide.
Use the contact form and choose “Correction or update” or “Suggest a compound or topic”. Including the page link and a source for the correct information helps.
Yes. You are welcome to link to any page in the library.
