©TBS 201 9 – All rights reserved                                                                                    First Edition 201 9 
  
 
 
 
 DRAFT TANZANIA STANDARD  
 
 
 
 
 
 
 
TBS/CDC 7( 5421) P3 Ethanol for Industrial use  - Specification  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS  
 
 
 
 TBS/CDC 7 (5421) P 3 
 
©TBS 201 9 – All rights reserved                                                                                    First Edition 201 9 
   
 
 
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Foreword  
 
This Draft Tanzania Standard is being developed by the Industrial and Labo ratory 
Chemicals Technical Committee under supervision of the Chemicals Divisional 
Standards Committee and it is in accordance with the procedures of the Bureau.  
 
This Draft Tanzania Standard has been prepared with assistance drawn from:  
BS 507: 1985 (Curr ent, confirmed June 2016) Specification for ethanol for industrial 
use, published by British Standards Institution.  
 
In reporting the test results of a test or analysis made in accordance with this 
standard, if final value, calculated or observed is to be rounded off, it shall be done in 
accordance with TZS 4  Rounding off numerical values . 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 TBS/CDC 7 (5421) P 3 
 
©TBS 201 9 – All rights reserved                                                                                    First Edition 201 9 
   
 
 
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 DRAFT TANZANIA STANDARD                                  TBS/CDC 7( 5421) P3 
 
 
Ethanol for Industrial use  – Specification  
 
 
1. Scope  
This Draft Tanzania Standard specifies  requirements , methods of sampling and test  
for ethanol suitable for  industrial use. It does not apply to material for medicinal and 
food purposes .  
 
2. Normative References  
The following referenced document s are indispensable for the application of this 
document; the latest edition of the referenced document (including any amendments) 
applies;  
 
2.1 TBS/CDC 7 (5772)  P3/ISO 758  Liquid chemical products for industrial use – 
Determination of density at 20 0C; 
 
2.2 TBS/CDC 7 (5773)  P3/ISO 759  Volatile organic liquids for industrial use – 
Determination of dry residue after evaporation on water bath – General method;  
 
2.3 TBS/CDC 7 (5776) P 3/ISO 1388 -2 Ethanol for industrial use – Methods of test – 
Part 2: Detection  of alkalinity or acidity to phenolphthalein;  
 
2.4 TBS/CDC 7 (57 77) P3/ISO 1388 -5 Ethanol for industrial use – Methods of test – 
Part 5: Determination of aldehyde content – Visual colorimetric method;  
 
2.5 TBS/CDC 7 (5778) P 3/ISO 1388 -6 Ethanol for industr ial use – Methods of test – 
Part 6: Test for miscibility with water;  
 
2.6 TBS/CDC 7 (5779) P 3/ISO 1388 -7 Ethanol for industrial use – Methods of test – 
Part 7: Determination of methanol content (methanol contents between 0.01 and 0.20 
% (v/v)) - Photometri c method;  
 
2.7 TBS/CDC 7 (5780) P 3/ISO 1388/8  Ethanol for industrial use – Methods of test – 
Part 8: Determination of methanol content (methanol contents between 0.10 and 1.5 
% (v/v)) -Visual colorimetric method;  
 
2.8 TBS/CDC 7 (5781) P 3/ISO 1388 -12 Ethano l for industrial use – Determination of  
permanganate time;  
 
2.9 TBS/CDC 7 (5774) P 3/ISO 2211  Liquid chemical products - Measurement of 
colour in Hazen units (Platinum -cobalt scale);  
 
2.10 TBS/CDC 7 (5775) P 3/ISO 3165  Sampling of chemical product for indust rial use 
– Safety in sampling;   
 
3. Terms and definitions  
 <<Not applica ble>> 
 TBS/CDC 7 (5421) P 3 
 
©TBS 201 9 – All rights reserved                                                                                    First Edition 201 9 
   
 
 
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 4. Requirements  
4.1 General requirement  
The material shall be clear and free from matter in suspension, as assessed by visual 
inspection, and shall consist, apart from water, essentially of ethanol, C 2H5OH. 
 
4.2 Specif ic requirements  
The material shall comply with specific  requirements in Table 1 when tested as 
methods specified in clause 2.  
 
Table  1: Requirements  of ethanol  for industrial use  
S/L 
No.  
Characteristics   
Requirements  Method of 
Test 
1. Colou r, in Hazen u nits, max 15 ISO 2211  
2. Density, in air at 20 ⁰C, g/mL, max 0.8103  ISO 758  
3. Ethanolic strength, % (v/v), min  95 Annex A  
4. Miscibility with  water  (ethanol:water), 1: 19 
(v/v) No opalescence  ISO 1388 -6 
5.  Acidity (as CH 3COOH), % (m/m), max 0.005  ISO 1388 -2 
6. Residue on evaporation, % (m/m), max 0.01 ISO 759  
7. Carbonyl compounds content, (as 
acetaldehydes), % (m/m) , max  0.10 ISO 1388 -5 
8. Alkalinity  Negative  ISO 1388 -2 
9.  Permanganate time, minutes, min 15 ISO 1388 -12 
10.  Methanol content (CH 3OH), % ( v/v), max 0.05 ISO 1388 -7 
 
5. Sampli ng 
The material shall be sampled according to the method specified in ISO 3165 (see 
clause 2).  
 
6. Packing  and labelling  
 
6.1 Packaging  
The material shall be supplied in clean, dry and tight containers, without faults, made 
of material which does not react  with alcohol. The method of closing the containers 
shall prevent the contents from contamination and evaporation.  
 
6.2 Labelling  
Each container shall bear the following information given in prominent, legible and 
durable labelling:  
a) Manufacturer’s name.  
b) Recognized trade mark, if any.  
c) Name of the material as “ethanol - industrial grade ” 
d) Nominal volume  
e) Nominal value for material strength.  
f) Batch number.  
g) Manufacturing date  
h) Pictorial symbol s to show flammability and toxicity nature.  
 
7. Storage  
The material sh all be stored in suitable container  which shall not affect integrity of the 
product in terms of quality.   
 TBS/CDC 7 (5421) P 3 
 
©TBS 201 9 – All rights reserved                                                                                    First Edition 201 9 
   
 
 
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Annex A  
(Normative ) 
 
 
Relationship between density in air and ethanolic strength  
 
Table 2 gives the relation between density in air and ethanolic str ength, expressed in 
either percentage by volume, or as a percentage by mass, at a 20 ⁰C. 
 
Table 2: Relationship between density in air and ethanolic strength  
 
         Density in air (g/mL)                 Ethanolic strength at 20 ⁰C 
                    20 ⁰C               % (m/m)             % (v/v)  
                   0.8281                  85.66               90.00  
                   0.8264                  86.31               90.50  
                   0.8248                  86.97               91.00  
                   0.8231                  87.63               91.50  
                   0.8213                 88.29               92.00  
                   0.8196                  88.96               92.50  
                   0.8178                  89.64               93.00  
                   0.8160                  90.32               93.50  
                   0.8141                  91.01               94.00  
                   0.8122                  91.70               94.50  
                   0.8103                  92.41               95.00  
                   0.8083                  93.12               95.50  
                   0.8063                  93.84               96.00  
                   0.8043                  94.57               96.50  
                   0.8022                  95.31               97.00  
                   0.8000                  96.05              97.50  
                   0.7978                  96.81               98.00  
                   0.7955                  97.59               98.50  
                   0.7932                  98.38               99.00  
                   0.7907                  99.18               99.50  
                   0.7882                100.00             100.00  
 
Note: For comprehensive ethanolic strength table refer Annex B  
 
 
 
 
 
 
 
 
 
 
 
 
 
 TBS/CDC 7 (5421) P 3 
 
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Annex B 
(Informative ) 
 
 
Comprehensive a lcoholimetric table 
 TBS/CDC 7 (5421) P 3 
 
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