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Essential Oil Documentation: What GC-MS, COA, and MSDS Mean for Your Purchase

Understanding GC-MS reports, Certificates of Analysis, and MSDS sheets is essential for B2B essential oil buyers. This guide explains each document and why you need them.

By AtsiriIndonesia TeamMay 3, 20265 min read
# Essential Oil Documentation: What GC-MS, COA, and MSDS Mean for Your Purchase If you are sourcing essential oils for fragrance, cosmetic, or food use, three documents are non-negotiable: the GC-MS report, the Certificate of Analysis (COA), and the MSDS/SDS. Here is what each one tells you. ## 1. GC-MS Report (Gas Chromatography–Mass Spectrometry) **What it is**: A detailed chemical fingerprint of the oil, showing every detectable compound and its percentage. **Why you need it**: - Confirms the oil is authentic (clove leaf should show >70% eugenol; if it doesn't, something is wrong) - Detects adulteration (synthetic compounds or carrier oils added) - Enables compliance verification (IFRA limits are based on specific compound percentages) - Provides batch-to-batch consistency tracking **What to look for**: The report should be batch-specific (not a generic spec). Ask for the testing lab name and accreditation. ## 2. Certificate of Analysis (COA) **What it is**: A document certifying the physical and chemical parameters of a specific batch. **Typical parameters**: - Specific gravity (density relative to water) - Refractive index (how the oil bends light) - Optical rotation (how the oil rotates polarized light) - Color (APHA or Gardner scale) - Appearance (clarity) **Why you need it**: These physical parameters are quick tests your QC department can run on arrival to verify the oil matches what was shipped. If specific gravity is outside the expected range, the batch may be adulterated or misidentified. ## 3. MSDS/SDS (Material Safety Data Sheet / Safety Data Sheet) **What it is**: A safety document covering hazard classification, handling requirements, first aid, storage, and disposal. **Why you need it**: - Required by law for handling flammable/irritant materials in most jurisdictions - Needed for shipping compliance (UN hazmat classification) - Required by your safety and logistics team ## Requesting Documentation at AtsiriIndonesia We provide GC-MS, COA, and MSDS with every order as standard — not on request, not at extra cost. Contact us for sample documentation before placing your first order so you can verify our standards.

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