DEAS 1105 : 2023 
ICS 75.100  
 
© EAC 2022                                                                                                                              First Edition 2023  
 DRAFT EAST AFRICAN STANDARD  
Liquefied petroleum Gas (LPG) — Specification  
EAST AFRICAN COMMUNITY  
 DEAS 1105 : 2023 
ii © EAC  2023 – All rights reserved  
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 DEAS 1105 : 2023 
© EA C 2023 – All rights reserved  iii 
 Foreword  
Developmen t of the East Afri can Standard s has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that ar e encoun tered when goods a nd services are exchanged 
within the Community will be removed.  
The Community has established an East African Standards Committee  (EASC)  mandated to develop and 
issue East African Standards  (EAS) . The Committee is composed of rep resentat ives of the Nation al 
Standards  Bodies in Partner States, together with the representatives from the publi c and private sector 
organizations  in the community .  
East African Standards are developed through  Technical Committees that are representative  of key 
stakeholders inclu ding governm ent, academia, consumer groups, private sector and other interested parties . 
Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the 
Partner States. The comments receive d are di scussed and incorp orated befor e finalization of standards, in 
accordance with the Principles and procedur es for development of East African Standards . 
East African Standards are subject to review, to keep pace with technological advances. Users of the East  
African Standards  are therefo re expected to ensure that they always have the latest versions of the standards 
they are implementing .  
The committee responsible  for this document is Technical Committee EASC/TC  068, Petroleum and 
petroleum product s. 
Attenti on is drawn to the  possibility  that some of the elements of this document may be subject of paten t 
rights. EAC shall not be held responsible for identifying any or all such patent rights.  
 
 DRAFT EAST AFRICAN STANDARD  DEAS 1105 : 2023 
 
© EAC 2023 – All rights reserved  1 
 Liquefied Petroleum  Gas (LPG) — Specification  
1 Scope   
This Draft East African Standard specif ies the requirements, sampling and test metho ds for liquefied 
petroleum gas es (LPG) intended for us e as domestic, commer cial, and industrial heating and engine fuels . 
This standard covers  LPG consisting of commer cial propane, commercial butane and commerci al propane 
butane (PB) mixture . 
2 Normative references   
The following re ferenced documents ref erred  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 cite d appli es. For undated 
references, th e lates t edition of the referenced documen t (includ ing any amend ments ) applies.  
ASTM D1267 , Standard Test Method for Gauge Vapor Pressure of Lique fied Petroleum (LP) Gas es (LP -Gas 
Method)  
ASTM D1657 , Standa rd Test Method for D ensity or Relative Density of Light H ydroca rbons by Pressure 
Hydrometer  
ASTM D183 7, Standard Test M ethod for Volatility of Liquefied Petroleum (LP ) Gases (Withdrawn 2017 ) 
ASTM D1838, Standard Test Method for Copper Strip Corrosion by Li quefied Petrol eum (L P) Gases 
ASTM D1945 , Standard Test Me thod for Analysis of Natural Gas by  Gas Chro matography  
ASTM D1 946, Standard Practice for Analysis of Reformed Gas by Gas Chromatography  
ASTM D2158 , Standard Test Method for Residues in Liquefied Petr oleum (LP) Gases  
ASTM D2163, Standard Test Method for Det ermination of Hydrocarbo ns in Lique fied Petr oleum (LP) Gases 
and Propane/Propene Mixtures by Gas Chromatography   
ASTM D 25 04, Standard Test Method for Non -condensable Gases in C2 and  Lighter Hydrocar bon Products 
by Gas Chromatography  
ASTM D 2598 , Standard Practice for Calculation of Certain  Physical  Properties of Liq uefied Petroleum (LP) 
Gases from Compos itional Analysis  
ASTM D3244, Standard Practice for Utilization of Test Data to Determine Conforman ce with Specific ations 
ASTM D 666 7, Standard Test Method for Determination of Total Volatile  Sulphur  in Gaseous Hydroca rbons 
and Liquefied Petroleum Gases by Ultraviolet Fluorescence  
IP 235, Determination of density of light hydrocarbons – Pressure hydrome ter method  DEAS 1105 : 2023 
2 © EAC  2023 – All rights reserved  
 IP 272 , Determination of mercaptan sulfur and hydrogen sulfide  content of liquefi ed petrol eum gases (LPG) - 
Electrometric titration method  
IP 317 , Determination of residues in liquefied petroleum g ases ― Low temperature evaporation method  
ISO 4257, Liquefied petroleum ga ses — Method of samp ling 
ISO 4259 -3, Petroleum and related product s — Precision of measuremen t methods and results — Part 3:  
Monitoring and verification of published precision data in rel ation to methods of test  
ISO 6326 -3, Natural gas — Determination of s ulfur compounds — Part 3: Determination of hydrogen sulfide, 
merca ptan sulfur and carbonyl su lfide sulfur by potentiometry  
ISO 7941 , Commercial propane and butane — Analysis by gas chroma tography  
ISO 8973 , Liquefied petroleum gases — Calculation method for  density and vapour pressure  
ASTM D1265 , Standard Practice for Sampling Liquefied Petroleum ( LP) Gases (Manual Method ) 
ASTM D3700 , Standard Practice for Obtaining LPG Samples Using a Floa ting Piston Cylinder  
ISO 13758 , Liquefied petroleum gases — Assessmen t of the dryness of propane — Valve freeze method  
ASTM D 2784 , Standard Test Method for Sulfu r in Liquefied Petroleum Gases (Oxy -Hydrogen Burner  or 
Lamp)  
3 Terms and defini tions   
For the purposes of this document, the following terms and def initions apply . 
ISO and IEC maintain terminological databases for use i n standardization a t the following ad dresses:  
ISO Online browsing pla tform: availa ble at http://www.iso.org/obp  
3.1 
Liquified Petroleum Gas  (LPG) 
flammable mixture of hydrocarbon gases of commercial propane, commercial butane and mixture of propane and butane 
that can be stored and/or handled in the liquid phase under moderate conditions of press ure and at ambient temperature.  
 
3.2 
commercial propane  
hydrocarbon product consisting mainly of propane gas for use  where high volati lity is required. 3.3 
commercial butane  
hydrocarbo n product consisting mainly of butane  gas for use where low volatility is requir ed.  
 
3.4 
commercial PB mixtures  
mixtures of mainly propane and butane gases for use where intermediate volatility is requi red. DEAS 1105 : 2023 
© EA C 2023 – All rights reserved  3 
 4 Requi rements  
4.1 General requirements  
4.1.1  LPG shall have a characteristic odour, and an appearance t hat is clear and free from su spended 
particles on visual inspection.  
4.1.2 LPG shall be odourized prior to delivery to a bulk plant by the  additio n of a warn ing agent of such 
character that it is detectable by a distinctive odour .  
4.2 Specific requirem ents 
LPG shall comply wit h the requirements given in Table 1 when test ed in accordance with the test methods 
prescribed therein.  
Table 1 — Specific Requirements  for LPG 
S/N Characterist ic Requirements  Test method  
Commercial 
butane  Commercial 
Propane  Commercial 
PB mixt ure 
i. Density at 200C kg/m3 To repor t To report  To report  ASTM D1657  
ASTM D 2598  
IP 235  
ISO 8973  
ii. Vapour pressure at 37.8º C kP a, 
max. 
 485  
 1434 
 1050  
 ASTM D1267  
ASTM D2598  
ASTM D 6897  
iii. 
 Volatile residue 95 % evaporated 
temperatu re 0C, at 760  mm Hg , max. 
 2.2 -38.3 2.2 ASTM D1837  
Or butan e and heavier %, v/v, max.  - 2.5 - ASTM D2163  
IP 405  
ISO 7941  
Or pentane and heavier per cent v/v, 
max. 2.0 
 0 2.0 ASTM D2163  
IP 405  
ISO 7941  
v Nitrogen  
 Nil 
 Nil 
 Nil 
 ASTM D1945   
ASTM D1 946 
ASTM D 2504  vi Oxygen  
 Nil 
 Nil 
 Nil 
 
vii Residue on evaporation of 100  ml, 
max.  0.05 0.05 0.05 ASTM D2158  
IP 317  
viii Oil stain observation  pass  pass  pass  ASTM  D2158   
IP 317 
ix Corrosion, copper strip ( 1h at 37.8º 
C, max. No.1  No.1  No.1 ASTM D18 38 
x Total sul phur mg/kg, max.  140 140 140 ASTM D 6667  DEAS 1105 : 2023 
4 © EAC  2023 – All rights reserved  
    ASTM D 5453  
ASTM D 7813  
EN 208 46 
ASTM D 2784  
xi Moisture  content  
 To be repo rted To be 
reported To be 
reported ASTM  7995  
ISO 13758  
xii Free water content   
 None   None  None  Visual in spection  
 
xiii Odour ste nching mercapt an sulphur 
content as ethyl m ercaptan, mg/ kg 15-50 
 15-50 
 15-50 
 ASTM D 5305  
xiv Hydrogen Sulphidea 
 Negative  Negative  Negative  ISO 8819  
ASTMD 2420  
xv Hydro gen sulphide  (H2S) mg/kg  max. 
 2 2 2 ASTMD48 10 
ASTM D4084  
IP 272  
a If negative, no nee d to carry out Hydrogen sulphi de (H 2S) mg/kg  test. 
NOT E mercaptan sulphur odour should be detectable (organoleptic ) 
 
5 Packagin g 
5.1 The LPG shall be packed in certified gas conta iners, that co nform to relevant international or regi onal 
standards . 
5.2 The containe rs sh all be acceptabl y sealed . 
6 Labe lling 
6.1 The follow ing information shall be clearly marked on the container, or on a label affixe d to the container:  
a) supplier’s name or brand  name or trade mark;   
b) Product name as “LPG”;  
c) type of liquefied petr oleum gas ; 
d) serial numb er; 
e) net weight in Kilograms (kg);  
f) water capacity in lit res; 
g) Date of manufacture of the container ; 
h) Manufacturer of the cont ainer ;  
i) standard to which the container was manufactured ; 
j) gross/ tare weight of the container in kg;  DEAS 1105 : 2023 
© EA C 2023 – All rights reserved  5 
 k) date of las t pressur e test of the  container; and  
l) precautionary labels that apply to safet y and proper  handling of LPG in accordance to ISO 7225  
6.2 For bulk transportation the above info rmation shall  be in the docum entation accompan ying the product.  
7 Sampling  
Sampli ng of LPG  shall be don e in accordan ce with ISO 4257 or AST M D1265  or ASTM D3700  DEAS 1105 : 2023 
6 © EAC  2023 – All rights reserved  
 Bibliography  
[1] KS 91:2022 , Petroleum  and petroleum p roducts - Liquefi ed petroleum  Gas (LPG) — Specification  
[2] TZS 818:20 21, Liquefied petroleum  Gas (LPG) — Specification  
[3] US 971 : 2019 , Liquefi ed petroleum  Gas (LPG) — Specification  
[4] RS 140:2012, Liquefied petroleum  Gas (LPG) — Specification  
 DEAS 1105 : 2023   
 
© EAC 2023 – All rights reserved