Reference number  
DRS 380: 201 8 
© RSB 2018 
 
 
 RWANDA 
STANDARD  DRS  
380 
 
First edition  
2018-mm-dd 
 
Macadamia  oil for cosmetic industry — 
Specification  
 
  DRS 380: 201 8 
©RSB 2018- All rights reserved                  ii 
 In order to match with technological development and to keep continuous progress in industries, 
standards are subject to periodic review. Users shall ascertain that they are in possession of the latest 
edition  
 
 
 
 
 
 
 
 
© RSB 2018 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 
in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 
prior written permission from R SB. 
Requests for permission to reprodu ce this document should be addressed to : 
Rwanda Standards  Board  
P.O Box 7099 Kigali -Rwanda  
KK 15 Rd, 49  
Tel. +250 252 586103/ 582945  
Toll Free: 3250  
E-mail: info@rsb.gov.rw  
Website: www.rsb.gov.rw  DRS 380: 201 8 
iii                ©RSB 2018- All rights reserved  
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ...................  iv 
1 Scope  ................................ ................................ ................................ ................................ .............  1 
2 Normative references  ................................ ................................ ................................ ...................  1 
3 Terms and definitions  ................................ ................................ ................................ ..................  2 
4 Requirements  ................................ ................................ ................................ ................................  2 
4.1 General requirements  ................................ ................................ ................................ ..................  2 
4.2 Specific requirements  ................................ ................................ ................................ ..................  2 
5 Packaging and labelling ................................ ................................ ................................ ...............  3 
5.1 Packaging  ................................ ................................ ................................ ................................ ...... 3 
5.2 Labelling  ................................ ................................ ................................ ................................ ........  3 
Annex  A (normati ve)  Determination of critical solution temperature  ................................ .................  4 
 DRS 380: 201 8 
©RSB 2018- All rights reserved                  iv 
 Foreword  
Rwanda Standard s are prepared  by Technical Committees and approved by R wanda Standards Board (RSB) 
Board  of Directors in  accordance with the procedures of RSB, in compliance with Annex 3 of the WTO/TBT 
agreement on the preparation, adoption and application of standards.  
The main task of technical committees is to prepare national standards.  Final Draft Rwanda S tandards adopted 
by Technical committ ees are ratified  by me mbers of RSB Board of Director s for publication and gazettment as 
Rwanda Standards.  
DRS 380 was prepared by Technical Committee RSB/TC 011, Cosmetics  and Related Products . 
In the preparation of this standard, reference was made to the following standard s: 
1) BS 7207:1990, Specification for crude vegetable fats  
The assistance de rived from the above source is hereby acknowledged with thanks.  
Committee membership  
The following organizati ons were represented on the Technical Committee on Cosmetics  and Related products  
(RSB/TC 011) in the preparation of this standard.  
National Industrial Research Development Agency  
Criminal Investigation Department /Anti -counterfeit  
Private Sector Federatio n/Beauty Makers Association  
KAN – HAN Co. Ltd  
NEO CONSULT  
ALYVO RWANDA Ltd  
PHARMACIE NOVA  
SULFO RWANDA Industries Ltd  
University of Rwanda – College of Sciences and Technology  
Rwanda Standards Board (RSB) — Secretariat  
 DRS 380: 201 8 
v                ©RSB 2018- All rights reserved  
 Introduction  
Oils and fats are among the most important cosmetic ingredients and are frequently used for a variety of external 
applications. They can be used directly as skin and hair care products but also as the basic substances for the 
manufacture of cosmetic products.  Many of the co smetic and hair care products on the market today rely on 
hydrocarbon molecules, derived from either mineral or vegetable oils, to provide antistatic, plasticiser and 
viscosity properties.  
Macadamia nuts contain over 75% of their weight as oil, the remaind er is: 9.0% proteins, 9.3% carbohydrates, 
1.5% moisture, 1.6% mineral matters and 2.0% fiber. The kernels of macadamia contain vitamin A1, B1, B2, 
niacin and essential elements such as calcium, iron, phosphorus, magnesium and potassium. The oil is a 
trigly ceride oil and contains primarily monounsaturated fats up to 80 -84%. Macadamia oil contains the highest 
percentage of mono -unsaturates when compared to both olive and canola oils.  
Palmitoleic acid at such a high concentration is rarely found in vegetable o ils. This fatty acid is mostly found in 
fish oils. Palmitoleic acid is found in macadamia oil in concentrations as high as 21%. Derivatives of macadamia 
oil in cosmetics include the light emollient ethyl macadamiate  and water -soluble PEG -16 macadamia glycerides . 
Polarity of the oil phase has a great influence on the formulation and properties of the cosmetic emulsions. 
Polarity of the oil phase is considered as an essential factor for the stability of water -in-oil emulsions. Polarity of 
macadamia nut oil was found to be 525.50  nm ± 0.29 nm (SE). This is considered as highly polar. Polar oils 
may enhance solubility of oil soluble cosmetic ingredients. Heat stability of emulsions prepared with strongly 
polar and non -polar oils were found to give emulsions with poor stability which is generally experienced with 
natural oi ls.  
Macadamia oil is an excellent botanical replacement for mink oil  in most applications. It is also used for hair.  
 
 DRS 380: 201 8 
1                ©RSB 2018- All rights reserved  
 Macadamia  oil for cosmetic industry  — Specification  
1 Scope  
This Draft Rwanda Standard prescribes the requirements , sampling and test methods  for macadamia oil for 
cosmetic industry.  
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.  
RS EAS 346, Labelling of cosmetics — General requirements  
RS EAS 846, Glossary of terms relating to the cosmetic industry  
RS EAS 847 -2, Cosmetics — Analytical methods — Part 2: Determination of moisture content and volatile 
matter content  
RS EAS 847 -5, Cosmetics — Analytical methods — Part 5: Determination of unsaponifiable matter  
RS EAS 847 -7, Cosmetics — Analytical methods — Part 7: Determination of specific g ravity  
RS EAS 847 -9, Cosmetics — Analytical methods — Part 9: Determination of colour  
RS EAS 847 -10, Cosmetics - Analytical methods - Part 10: Determination of acetyl value and hydroxyl value  
RS EAS 847 -12, Cosmetics — Analytical methods — Part 12: Determi nation of flash point by Pensky — Martens 
Closed Cap Tester  
RS EAS 847 -13, Cosmetics — Analytical methods — Part 13: Determination of rancidity  
RS EAS 847 -16, Cosmetics — Analytical methods — Part 16: Determination of lead, mercury and arsenic 
content:  
RS ISO 660, Animal and vegetable fats and oils — Determination of acid value and acidity  
RS ISO 663, Animal and vegetable fats and oils — Determination of insoluble impurities content  
RS ISO 3657, Animal and vegetable fats and oils — Determination of saponification value  
RS ISO 3961, Animal and vegetable fats and oils — Determination of iodine value   
©RSB 2018- All rights reserved                  2 
 RS ISO 6320, Animal and vegetable fats and oils — Determination of refractive index  
RS ISO 24153, Random sampling and randomisation procedures  
3 Terms and de finitions  
For the purposes of this standard, the terms and definitions given in RS EAS 846 and the following apply.  
3.1 
macadamia oil 
or macadamia nut oil , is the non -volatile oil expressed from the nut meat of the macadamia  (Macadamia 
integrifolia ) tree, a native Australian nut.  
4 Requirements  
4.1 General requirements  
4.1.1 The product shall be macadamia oil obtained from the nut meat of the macadamia  (Macadamia 
integrifolia ) tree, a native Australian nut  by a process of cold expression , followed by a full refining process to 
render an oil which is light in color and mild in odor. 
4.1.2 When examined visually, the product shall be clear and free from sediments and other foreign matter, 
separated water and added colouring and flavouring substances.  
4.1.3  The product shall be free from admixture with other oils.  
4.2 Specific require ments  
4.2.1  The product shall comply with the requirements given in Table 1  when tested in accord ance  with the 
methods prescribed therein . 
Table 1  — Requirements for macadamia  oil  
S/No.  Characteristic  Requirement  Test method  
i Moisture content, % m/m, max.  0.5 RS EAS 847 -2 
ii Insoluble impurities, % m/m, max.  0.25 RS ISO 663  
iii Colour in a 1” cell on the Lovibond scale, expressed 
as Y + 5R, max. deepness  4.0 RS EAS 847 -9 
iv Refractive index at 20 C, range  1.4660 – 1.4700 RS ISO 6320  
v Specific gravity at 30/30 C, range  0.924 -0.930   RS EAS 847 -7 
vi Saponifi cation value, range  190–200  RS ISO 3657  
vii Iodine value , range  70–80  RS ISO 3961  
viii Acid value, max.  1.0 RS ISO 660  DRS 380: 201 8 
3                ©RSB 2018- All rights reserved  
 ix Unsaponifiable matter, % m/m, max.  1.5 RS EAS 847 -5 
x Acetyl value, min  143 RS EAS 847 -10 
xi Flash point, C (Pensky Martens closed), min.  300 RS EAS 847 -12 
xii Test for rancidity  Shall be free from rancidity  RS EAS 847 -13 
xiii Critical solution temperature, max  0 ºC Annex A  
4.2.2  The products shall comply with the limits for heavy metal contaminants in accordance with Table 
2when tested in accord ance  with the methods prescribed therein . 
Table 2 — Limits for heavy metal contaminants for macadamia oil 
S/No  Characteristic  Requirement  Test method  
i Lead, mg/kg , max.  20  
RS EAS 847 -16 
 ii Arsenic, mg.kg , max  2 
iii Mercury, mg/kg , max.  2 
NOTE  1 The total amount of heavy metals as lead, mercury and arsenic, in combination, in 
the finished product should not exceed 20  mg/kg . 
NOTE  2 The heavy metals  including  lead, mercury and arsenic  may be as a result of 
contamination during processing and should not be deliberately added as ingredients.  
5 Packaging and labelling  
5.1 Packaging  
5.1.1 The product shall be packaged in suitable well -sealed containers that s hall protect the contents and 
shall not cause any contamination or react with the products.  
5.2 Labelling  
5.2.1 In addition to the requirements of RS EAS 346 , the Material Safety Data Sheet  shall be provided.  
5.2.2 The phrase ‘For external use only’ shall be conspicuously marked (either printed on the label affixed to 
the container, or lithographed, or stencilled thereon with indelible ink) .  
©RSB 2018- All rights reserved                  4 
 Annex  A 
(normative)  
 
Determination of critical solution temperature  
A.1 Reagent , the reagent shall be prepared by diluting ethyl alcohol or rectified spirit with distilled water till 
the relative density of the mixture at 15.5 ºC is 0.8303 ± 0.0001, when compared with distilled water at the same 
temperature. De -natured alcohol shall not be used for this test.  
A.2  Procedure , mix in a test tube, 1.0 g of the oil, with 4.15 times its mass of the reagent. Upon examination, 
the solution thus obtained shall be perfectly clear at 20 ºC and shall remain clear when cooled and maintained 
for 5 minutes at a temperature of 0 ºC . 
  DRS 380: 201 8 
ICS 71.100.70  
 
 
©RSB 2018- All right s reserved