Diluted Alcohol
DEFINITION
Diluted Alcohol is a mixture of Alcohol and water containing NLT 41.0% and NMT 42.0% by weight, corresponding to NLT 48.4% and NMT 49.5% by volume, at 15.56
, of C2H5OH.
, of C2H5OH.Diluted Alcohol may be prepared as follows.
| Alcohol | 500 mL |
| Purified Water | 500 mL |
Measure the Alcohol and the Purified Water separately at the same temperature, and mix. If the water and the Alcohol and the resulting mixture are measured at 25, the volume of the mixture will be 970 mL.
, the volume of the mixture will be 970 mL.SPECIFIC TESTS
• Specific Gravity 
841
:
0.935–0.937 at 15.56, indicating 41.0%–42.0% by weight, or between 48.4% and 49.5% by volume, of C2H5OH
841:
0.935–0.937 at 15.56, indicating 41.0%–42.0% by weight, or between 48.4% and 49.5% by volume, of C2H5OH
• Other Requirements:
In other respects, it meets the requirements in Alcohol, allowance being made for the difference in alcohol concentration.
ADDITIONAL REQUIREMENTS
• Packaging and Storage:
Preserve in tight containers, remote from fire.
Auxiliary Information—
Please check for your question in the FAQs before contacting USP.
| Topic/Question | Contact | Expert Committee |
|---|---|---|
| Monograph | Galina Holloway, Ph.D.
Senior Scientific Liaison (301) 816-8133 |
(EXC2010) Monographs - Excipients |
USP38–NF33 Page 6512