ISO 8901:2003

Overview

ISO 8901:2003 defines quality characteristics and test requirements for the essential oil of bitter orange petitgrain, cultivated (Citrus aurantium L.). The standard’s purpose is to facilitate objective assessment of oil quality for industry, testing laboratories and regulatory bodies. It applies to the cultivated petitgrain oil (Mediterranean type) and explicitly excludes the Paraguayan type covered by ISO 3064.

Key topics and technical requirements

ISO 8901:2003 specifies physical, chemical and chromatographic criteria, sampling and test methods (references to other ISO methods):

• Appearance & aroma
  • Clear liquid; colour pale yellow to amber yellow with slight blue fluorescence.
  • Odour: characteristic orange-like, bitter, ethereal and pleasant.
• Physical properties
  • Relative density (20 °C): min 0.885, max 0.898.
  • Refractive index (20 °C): min 1.4550, max 1.4720.
  • Optical rotation (20 °C): between −6° and +2°.
  • Miscibility in 70% ethanol at 20 °C: ≤ 5 volumes of ethanol required for 1 volume oil.
• Chemical values
  • Acid value: maximum 2.
  • Ester value: minimum 140, maximum 217; saponification time 1 h.
• Chromatographic profile (normative)
  • Analysed by gas chromatography (per ISO 11024 series). The standard requires identification and integrator percentage ranges for representative components such as:
    • Linalyl acetate: 40–72%
    • Linalool (linalol): 10–32%
    • Limonene: 1–6%
    • trans-β-ocimene: 1–4%
    • α-terpineol: 1–7%
    • Geraniol: 1–4%
    • Geranyl acetate: 1.5–5.5%
• Sampling & testing
  • Minimum test sample: 50 ml (see ISO 212 for sampling).
  • Test methods referenced: ISO 279, 280, 592, 709, 875, 1242 and ISO 11024.
• Safety information
  • Informative flashpoint: mean value +75 °C (Pensky-Martens).

Applications and who uses it

ISO 8901:2003 is used by:

• Essential oil producers and distillers for product specification and quality control.
• Analytical and QC laboratories performing gas chromatography and physico-chemical testing.
• Perfumers, flavor houses and cosmetic manufacturers sourcing petitgrain oil for formulations.
• Buyers, importers, transport and insurance companies needing standardized safety and composition data.
• Regulatory authorities and standards organizations for conformity assessment and trade.

Related standards

Relevant cross-references and complementary ISO documents:

• ISO 3064 (petitgrain, Paraguayan type)
• ISO 11024-1 / -2 (chromatographic profile guidance)
• ISO 212 (sampling)
• ISO 279, 280, 592, 709, 875, 1242 (test methods)
• ISO/TR 210, ISO/TR 211, ISO/TR 11018

Keywords: ISO 8901, bitter orange petitgrain, Citrus aurantium, essential oil standard, chromatographic profile, gas chromatography, essential oil quality.