State Bureau of Quality and Technical Supervision
Standard GB/T 394.1-94 (Current as of October 2000)
Ethanol for Industrial Use
1. | Scope of Standard: | This standard shall apply to hydrous ethanol for industrial use, which has been produced by the fermentation of grains, potatoes or molasses. It does not apply to ethanol for beverage use, covered in Standard GB 10343:89. | |||
2. | Classes: | This
standard covers four grades of industrial ethanol, namely: Grade 3.1 Excellent grade Grade 3.2 First Class grade Grade 3.3 Standard grade Grade 3.4 Crude ethanol grade | |||
3. | Requirements: | ||||
Parameter |
Specifications |
||||
Grade 3.1 | Grade 3.2 | Grade 3.3 | Grade 3.4 | ||
(a) Appearance | Transparent liquid | Transparent liquid |
Transparent liquid |
Primrose liquid | |
(b) Color, maximum No. | 10 | 10 | 10 | - | |
(c) Odor and taste | No foreign odor or taste | No
foreign odor or taste |
No
foreign odor or taste |
- | |
(d) Ethanol content, Percent v/v, minimum | 96.0 | 95.5 | 95.0 | 95.0 | |
(e) Sulphuric acid test, maximum No. | 10 | 80 | - | - | |
(f) Permanganate time, minutes, minimum | 30 | 15 | 5 | - | |
(g) Aldehydes, as acetaldehyde, mg/litre, maximum | 5 | 30 | - | - | |
(h) Fusel oil, as isobutanol plus isoamyl alcohol, mg/litre, maximum | 10 | 80 | 400 | - | |
(i) Methanol, mg/litre, maximum | 800 | 1200 | 2000 | -
| |
(j) Acidity, as acetic acid, mg/litre, maximum | 10 | 20 | 20 | -
| |
(k) Esters, as ethyl acetate, mg/litre, maximum | 30 | 40 | - | - | |
(l) Non-volatile residue, mg/litre, maximum | 20 | 25 | 25 | -
|
Notes:
1. All test methods are in accordance with GB/T 394.2 "General testing methods for alcohol".
2. Parts per million (p.p.m) figures
have not been inserted as in the other standards, because the mg/litre figures
are, in fact, parts per million on a weight/volume basis.
3. This data is
extracted from a translation of the original standard in Chinese. Reference should
be made to the original standard to authenticate any details.