(bue' til al' ka hol).
Butyl Alcohol is n-butyl alcohol.
• Butyl Ether
Sample: Butyl Alcohol
Detector: Thermal-conductivity detector
Column: 6-mm × 2-m stainless steel column packed with 25% liquid phase G29 3,3¢-thiodipropionitrile on 30- to 40-mesh support S1C
Column temperature: 85
Carrier gas: Helium
Flow rate: 75 mL/min
Injection size: 10 µL
[NoteThe retention times for butyl ether, 2-butanol, water, isobutyl alcohol, and butyl alcohol are approximately 6.0, 12.0, 17.0, 18.0, and 25.0 min, respectively. ]
Acceptance criteria: The response due to butyl ether is NMT 0.2% of the sum of all of the responses.
• Specific Gravity 841: 0.8070.809
• Distilling Range, Method II 721: Butyl Alcohol distills within a range of 1.5, including 117.7.
Sample: 74 mL (60 g)
Analysis: Titrate the Sample with 0.020 N alcoholic potassium hydroxide, using phenolphthalein TS as the indicator, until a pink color persists for NLT 15 s
Acceptance criteria: NMT 2.5 mL is consumed
• Water Determination, Method I 921: NMT 0.1%
• Limit of Nonvolatile Residue
Sample: 100 mL
Analysis: Evaporate the Sample in a tared porcelain dish on a steam bath, and dry at 105 for 30 min
Acceptance criteria: The weight of the residue does not exceed 4 mg (0.004%).
Sample: 10 mL
Analysis: To 10 mL of silver-ammonia-nitrate TS in a test tube add the Sample, and mix. Allow the mixture to stand in a dark place for 30 min
Acceptance criteria: No color is produced, although a slight precipitate may form at the interface of the two layers.
• Packaging and Storage: Preserve in tight containers, and prevent exposure to excessive heat.