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Methanol AR/ LR / Extra Pure (Complies with BP/ USP) also known as methyl alcohol, wood alcohol, wood naphtha or wood spirits, is a chemical with the formula CH3OH (often abbreviated MeOH). Methanol acquired the name "wood alcohol" because it was once produced chiefly as a byproduct of the destructive distillation of wood.
Methanol is produced in a catalytic industrial process directly from carbon monoxide, carbon dioxide, and hydrogen.
Methanol is the simplest alcohol, and is a light, volatile, colorless, flammable liquid with a distinctive odor very similar to, but slightly sweeter than, that of ethanol (drinking alcohol). At room temperature, it is a polar liquid, and is used as an antifreeze, solvent, fuel, and as a denaturant for ethanol.
| Test | Observation | Limit as per party specification |
|---|---|---|
| Description | A clear colourless liquid with a characteristic odour is flammable | Aclear colour liquid with a characteristic odour, is flammable. |
| Solubility | Miscible with water, alcohol, ether and with benzene and with most organic solvent. | Miscible with water, alcohol, ether and with benzene and with most organic solvent. |
| Identification by (IR & GC) | Complies | [Should complies IR & GC] |
| Readily carbonizable substance | Complies | [No discoloration should be developed] |
| Acidity | Passes | [NMT 0.45ml of 0.020N NaOh] |
| Alkalinity | Passes | [NMT 0.20 ml of 0.020 N H2SO4] |
| Non-volatile matter | 0.00% | [NMT 0.001%] |
| Aldehydes and ketone (as acetone) | <.002% | Any turbidity produced in the sample preparation should not be greater than that produced in the standard preparation. [NMT 0.003%] |
| Readily oxidizable substances | Complies | [Pink colour shoul be not completely disappear within 5 minute] |
| Water | 0.07% | [NMT. 0.1%] |
| Assay | 99.80% | [NLT 99.5%] |
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