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09 Nov 2011 - Storage Tank for Sale
For Sale: Storage Tank, 10,000 L (2 x 5,000L compartments), stainless steel, double walls, ex Coraki AUD $ 7,500.00. Contact Hans 0402 019 811 More »»
17 May 2011 - Australian native plant industries featured by Australia Post
Australia Post is featuring four of Australia's largest native plant industries: eucalyptus oil, honey, macadamia nuts and tea tree oil in a new stamp issue available on 17 May 2011. More »»
25 Jan 2011 - Myrtle Rust in Tea Trees
ATTIA Ltd sent seedlings of Melaleuca alternifolia (tea trees) to the CSIRO for host testing in mid 2010. The tests were positive. More »»
21 Jan 2011 - New Address for ATTIA Ltd
ATTIA Ltd has a new postal address. For all correspondence please use PO Box 903 Casino NSW 2470. More »»
PrintISO4730 and AS 2782-1997 Standards
The chemical composition of tea tree oil is defined by international standard ISO 4730 (2004) and the identical Australian standard AS 2782-2009 ("Oil of Melaleuca, Terpinen-4-ol type"), which specifies levels of 15 of the more than 100 components in pure Australian tea tree oil. Any batch of oil sold by an ATTIA member must be accompanied by an independently tested certificate of analysis demonstrating conformance to these standards. ATTIA also recommends that the country of origin is clearly declared when purchasing tea tree oil from any supplier.
A summary of the standard:
AS 2782 – 2009 Oil of Melaleuca, terpen-4-ol type (Tea Tree Oil)
Essential oil obtained by steam distillation of the foliage and terminal branchlets of Melaleuca alternifolia (Maiden et Betche) Cheel, Melaleuca linariifolia Smith, and Melaleuca dissitiflora F. Mueller, as well as other species of Melaleuca provided that the oil obtained conforms to the requirements given in this International Standard.
| Requirements: | ||
| Appearance | Clear, mobile liquid | |
| Colour | Colourless to pale yellow | |
| Odour | Characteristic | |
| Relative density (20° C) | Min: 0.885 | Max: 0.906 |
| Refractive index (20° C) | Min: 1.475 | Max: 1.482 |
| Optical rotation (20° C) | between + 5° and + 15° | |
| Miscibility in ethanol (20° C) | not necessary to use more than 2 volumes of ethanol, 85% (volume fraction) to obtain a clear solution with 1 volume of essential oil | |
| Flashpoint (closed cup) | mean value | mean value |
| Min volume of test sample | 50 ml | |
| Chromatographic profile: | ||||
| Component | Min % | Max % | ||
| α-Piniene | 1 | 6 | ||
| Sabinene | trace | 3.5 | ||
| α-Terpinene | 5 | 13 | ||
| Limonene | 0.5 | 1.5 | ||
| p-Cymene | 0.5 | 8 | ||
| 1,8-Cineole | trace | 15 | ||
| γ-Terpinene | 10 | 28 | ||
| Terpinolene | 1.5 | 5 | ||
| Terpinen-4-ol | 30 | 48 | ||
| α-Terpineol | 1.5 | 8 | ||
| Aromadendrene | trace | 3 | ||
| Ledene (syn. viridiflorene) | trace | 3 | ||
| δ-Cadinene | trace | 3 | ||
| Globulol | trace | 1 | ||
| Viridiflorol | trace | 1 | ||
A full copy of this standard is available for purchase at: www.saiglobal.com