Product Name: Methanol

Chemical Structure: 

CAS Number: 67-56-1

Molecular Formula: CH4O

Molecular Weight: 32.04

Storage: 18-24°C, dark and sealed

Appearance: Colourless Liquid

Identification: MS

Purity: 99.3%

Assay: 99.2%

Uncertainty: ±2.0%

1. Purity

1.1. GC

2. Identification

2.1. MS

3. Final Result

Method: Karl Fischer

Number of Results: n=3 Average: 0.09%

Chromatographic purity (GC): 99.3%

Water Content: 0.09%

Assay (100% method): 99.32%

Uncertainty: ±2.0%

The calculation of the 100% method follows the formula:

Assay (%) = (100%-Water Content * Purity GC (%) /100%

Water Content is considered as absolute effect, GC purity is considered as relative effect.

The uncertainty values are the expanded uncertainty and represent an estimated standard deviation equal to the positive square root of the total variation of the uncertainty of components. A normal distribution is assumed and a coverage factor of K=2 is chosen using approximately a 95% confidence level.

注：以上信息仅供参考，以产品附带证书为准。