(+)-alpha-Pinene is a monoterpene reference substance in ROTICHROM® GC quality for gas chromatography. Identified by CAS number 7785-70-8 and empirical formula C₁₀H₁₆, it has a molar mass of 136,24 g/mol and a density of 0,857 g/cm³. The material shows a boiling point of 156 °C and a flash point of 32 °C, supporting method design and safe laboratory handling. Supplied as a 100 mg portion in glass, it is intended for analytical workflows that need defined GC reference substances for calibration, peak assignment and comparative identification. Typical use cases include terpene profiling, natural-product analysis and fragrance-related chromatography where enantiomeric pinene standards are required. Physical constants from the manufacturer data help plan sample introduction and temperature programmes. This reference material comes from manufacturer Carl ROTH within the ROTICHROM® GC line and fits laboratories working under chromatography and GC reference-substance protocols. The compact glass pack suits method development, routine QC checks and research applications that demand a clearly specified (+)-alpha-pinene standard. This article is part of Essential oils & fragrances, in Natural products & essential oils. Key features Purity (GC): ≥98 % CAS number: 7785-70-8 Pack size: 100 mg glass EG nr.: 232-077-3 Empirical formula: C₁₀H₁₆ Molar mass: 136,24 g/mol Technical Information Sheet: Safety Data Sheet: