Gilian Pump with cassette

Gilian Pump with cassette

LCS Laboratory offers sampling cassettes, personal (portable) air sampling pumps and  laboratory testing for mono- diisocyanates by OSHA 42 and 47 procedure and mono and poly- diisocyanates by NIOSH 5525.

Isocyanate functional group

Isocyanate functional group

Diisocyanates belong to  a family of highly reactive organic compounds containing two isocyanate functional groups from which they earned it generic name. Diisocyanate, or commonly Isocyanates are widely used in the manufacture of flexible and rigid foams, fibers, coatings such as paints and varnishes, and elastomers, and are increasingly used in the automobile industry, auto body repair, and building insulation materials. Spray-on polyurethane products containing isocyanates have been developed for a wide range of retail, commercial, and industrial uses to protect cement, wood, fiberglass, steel and aluminum, including protective coatings for truck beds, trailers, boats, foundations, and decks.

Skin irritation

Skin irritation

Isocyanates are powerful irritants and sensitizer. Direct skin contact can also cause marked inflammation and skin irritation. Most notoriously, the isocyanates are famous for being sensitizers. Once exposed to isocyanates, people become “sensitised” and can experience severe asthma attacks if they are exposed to diisocyanates again. Death from severe asthma in some sensitized subjects has been reported.

95% of diisocyanate samples, that LCS Laboratory receives for analysis, falls on methylene bis (phenyl isocyanate) (MDI), toluene diisocyanate (TDI), and hexamethylene diisocyanate (HDI). Other common diisocyanates include naphthalene diisocyanate (NDI), methylene bis-cyclohexylisocyanate (HMDI)(hydrogenated MDI), and isophorone diisocyanate (IPDI).

Polyisocyanates were introduced to the market as safer alternative to diisocyanates. Polyisocyanates are produced via partial condensation if diisocyanates into dimers, trimers and heavier condensates, and they are usually identified by the name of original diisocyanate by adding prefix “poly-“: poly-HDI or poly-MDI. LCS Laboratory offers analysis of airborne polyisocyanates by the the only available standard  method NIOSH 5525.

If you need assistance with sampling of airborne isocyanates, please email us at your convenience.