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N-Cyclohexyl-2-pyrrolidone or CHP is a yellow to colorless liquid. It has a low vapor pressure, and is nearly odorless. It has a low solubility in water, but is soluble in a variety of organic solvents.
CHP is used in the electronics industry as a photoresist stripper (usually in combination with other solvents like N-methyl-2-pyrrolidone), and as a chemical polisher of copper in circuit board fabrication. It is also used in the textiles industry as a dye carrier in aramid fabrics.
Molecular formula: C10H17NO
Molecular weight: 167.24800
Precise quality: 167.13100
Appearance and character: transparent liquid
Density: 1.007 g/mL at 25 °C (lit.)
Melting point: 12 °C
Boiling point: 154 °C7 mm Hg (lit.)
Flash point: >230 °F
Refractive index: n20/D 1.499 (lit.)
Water solubility: Soluble
Stability: Stable under normal temperatures and pressures.
Store conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Vapor pressure: 0.05 mm Hg (25 °C)
Safety information correction
Signal word: danger
Hazard statement: H302 + H312; H314
Cautionary statement: P280; P305 + P351 + P338; P310
Package level: III
Risk category: 8
Customs Code: 29337900
Dangerous goods transportation Code: UN 2810 6.1/PG 2
Danger category code: R21/22; R26; R36/37/38
Safety instructions: S23-S24/25-S45-S38-S36/37/39-S28A-S26
Dangerous goods sign: T+