DRAFT ZANZIBAR NATIONAL STANDARD  
 
 
Essential oil of  Eucalyptus  citriodora -Specification  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
ZANZIBAR BUREAU OF STANDARDS  
 
 
© ZBS 202 2 — All rights res erved                  First edition  
PCD 328: 202 2 
          ICS 71.100.60  
                                                        
 PCD 32 8: 2022  
 
©ZBS 202 2 - All rights reserved  
 ii 
 Foreword  
 
This draft Zanzibar standard has been developed Cooking and Essential Oil Standard Technical 
committee (TCFA4). In accordance with ZBS general procedures, this draft standard is presented to 
the public in order to receive any technical and editorial comment concerns.  
 
The Zanzibar Bureau of Standard (ZBS) was established under Standard Act No. 1 of 2011.  
 
 
 
 
                          
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Zanzibar Bureau of Standards (ZBS)  
P.O.Box 1136  
Zanzibar  
Tel:  +255 24 2232225  
Fax: +255 24 2232225  
E-mail: info@zbs.go.tz  
Web: www.zbs.go.tz  
 
 PCD 32 8: 2022  
 
1                                                                                             ©ZBS 2022 - All rights reserved  
 Essential oil of Eucalyptus citriodora  
 
1 Scope  
 
This draft Zanzibar National Standard specifies requirements , methods of sampling and test  for 
Essential oil of Eucalyptus derived from Corymbia citriodora  and Eucalyptus citriodora Hook . 
  
2 Normative references   
 
The following documents are referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, only the edition cited applies. For 
undated references, the latest edition of the referenced document (including any amendments) 
applies.   
 
CODEX STAN 193, General Standard for Contaminants and Toxins in Foods  
 
ISO 279, Esse ntial oils — Determination of relative density at 20 °C — Reference method  
 
ISO 280, Essential oils — Determination of refractive index  
 
ISO 592, Essential oils — Determination of optical rotation  
 
ISO 1271 , Essential oils — Determination of carbonyl value — Free hydroxylamine method  
 
ISO/TR 11018, Essential oils — General guidance on the determination of flashpoint  
 
ISO 212, Essential oils — Sampling  
 
ZNS 94, Rounding off numerical values  
 
3 Terms and definitions  
For the purposes of this document, the following (terms and) definitions apply  
 
3.1  
essential oil of Eucalyptus  citriodora  
oil obtained by steam distillation of the leaves and twigs of Corymbia citriodora  (Hook.)  K.D. Hill and 
L.A.S. Johnson of the Myrtaceae family  
 
4 Requirements  
 
4.1 Raw material  
 
Essential oil of Eucalyptu s citriodora shall be extracted  by steam distillation  of the  leaves and twigs of 
Corymbia citriodora  (Hook.) K.D. Hill and L.A.S. Johnson . 
4.2 General requirement  
 
Essential oil of Eucalyptus  citriodora shall  
a) be clear and mobile liquid  
b) have odour of Characteristic, recalling that of citronellal  
c) have colourless to pale yellow  
d) be free  from sediment and suspended matter  
e) be free from admixture with other oils when tested according to appropriate method  
 
4.3 Specific requirement  
 PCD 32 8: 2022  
 
©ZBS 202 2 - All rights reserved  
 2 
 Essential oil of Eucalyptus  citriodora shall comply with specific requirements given in table 1 when 
tested in accordance with test methods specified therein.  
 
Table 1: Specific requirements  of Eucalyptus citriodora oil  
 
S/N Characteristic  requirements  Method of test  
i.  Relative density at 20 0C/water at 20 0C 0.860 -0.880  ISO 279  
ii.  Refractive index at 20 0C 1.450 - 1.460  ISO 280  
iii.  Optical rotation at 20 0C −1° to +3°  ISO 592  
iv.  citronellal content %  70-85 ISO 127 1 
v.  Miscibility  in ethanol 70% at 20 0C  (V/V) 
%,  1:4 ISO 875  
vi.  Flash  point  0C +78 ISO/TR 11018  
 
 
5 Contaminants   
 
5.1 Pesticide residues  
 
Essential oil of Eucalyptus  citriodora shall comply with pesticide residue limits established by the 
Codex Alimentarius Commission for this commodity.  
 
5.2 Heavy metal  
 
Heavy metal in Essential oil of Eucalyptus  citriodora  shall not exceed maximum residue limits as 
established in the Codex stan 193 
 
6 Weights and measures  
 
Essential oil of Eucalyptus  shall be packaged in accordance with the Zanzibar weights and measures 
regulations . 
 
7 Packaging and labelling  
  
7.1 Packaging  
  
Essential oil of Eucalyptus  citriodora shall be packaged in grade containers  and sealed in manner to 
ensure the safety and quality requirements specified in this standard are maintained throughout th e 
shelf life of the product.  
 
7.2 Labelling  
  
7.2.1  Essential oil of Eucalyptus citriodora  shall be legibly and indelibly labelled with the fo llowing:  
  
a) name of the product ‘ Eucalyptus citriodora oil  (Latin name including the botanical authority) of 
the plant, and part of the plant from which it is obtained  
b) brand name/trade name  if any ;  
c) date of manufacture;  
d) best before  date;  
e) the percentage of the citronellal content  
f) name and physical address of the manufacturer or packer  or the distributor ; 
g) directions for use and storage condition  
h) lot identification or batch or code number;  
i) net weight in metric unit;   PCD 32 8: 2022  
 
3                                                                                             ©ZBS 2022 - All rights reserved  
 j) country of origin; an d  
 
7.2.2  The language on the label shall be ‘Kiswahili’ and/or English. Additional language may be 
used depending on the designated market.  
 
8 Sampling   
  
Sampling of Essential oil of Eucalyptus citriodora shall be done according to ISO 212