What is a super-safe) solvent?
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handle without taking extraor! ι dinary precautions such as closed containment systems or elaborate ventilation systems. If you're looking HaC yH2 for such a solvent, consider GAF M-Pyrol· N-methyl2-pyrrolidone. It 0 = 0 H2C has an excellent toxicity track record. M-Pyrol has low S N vapor pressure and a high flash CH 3 point, so it doesn't pose an explosion or inhalation hazard. It has a low order of toxicity, and out standing thermal and chemical stability. It's infinitely miscible with water, easy to recover. And it's biodegradable. But M-Pyrol is not only safe. Its solubility parameter of 11 gives it broad solubility for numerous resins, including acrylics, amide imides, epoxies, polyesters, PVC and urethanes. You can use M-Pyrol to formulate many types of surface coatings, waterbased and solvent-based. It's ideally
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Selected Properties of GAF M-Pyror N-Methyl-2-Pyrrolidone Physical Properties Boiling Point 202°C (395°F) Autogenous Ignition Temperature 287°C±3°C Vapor Pressure® 20°C 0.29mm Rash Point (open cup) 95°C (204°F) Explosive Limit 0.058 grams/liter (Factory Mutual Research 218% vapor in air Corporation Apparatus) [lower limit 360°F (182°C)J 0.323 grams/liter 1224% vapor in air I upper limit 370°F (188°C)J Toxicological Properties Ld50 Acute Oral 4,320 mg/Kg Subacute 90 day feed no effect, 2000 ppm Inhalation 10 days no effect Non-Mutagenic
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* it's an aprotic solvent (no active hydrogen), this H2C—*c*4 remarkably stable heterocyclic com pound is highly recommended H2C c=o for use as a reac tion solvent in the synthesis of plas" o" tics resins, pharmaceuticals and agri cultural chemicals. Consider also GAF BLO* Y-butyrolao tone. Because it's closely related to M-Pyrol, it has many similar safety and solvency characteristics and may offer superior performance in some applications. GAF produces both of these unique heterocyclic compounds domestically at two independent plant locations, so we can offer an assured source of supply. For more information and free samples, just write GAF Corporation, Acetylene Chemicals Department, 1361 Alps Road, Wayne, NJ 07470.
m Acetylene Chemicals CIRCLE 3 1 ON READER SERVICE CARD
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