Determination of tert-butylcatechol (TBC) in butadiene for industrial use (1)

1 Scope

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2 Normative references

The clauses in the following documents have become clauses of this standard after being quoted in this standard

GB/T8170 Numerical Rounding Rules

GB/T6682 Analytical Laboratory Water Specification and Test Force Method (GB/T6682-2008, ISO3639:1987, MOD)

GB/T13290 Industrial Propylene and Butadiene Liquid Sampling Method

3 Spectrophotometry

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After the butadiene is evaporated, the remaining residue is dissolved in water, and an excess of ferric chloride is added .

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The reagents used in this method are all analytically pure reagents, and the water meets the requirements of Grade 3 water specified in GB/T6682

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Note: TBC has potential hazards, can cause skin discomfort or burns, can be absorbed through the skin, may cause harm to the respiratory system, and may cause fatal hazards after swallowing

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2 Mercury thermometer: rod shape, temperature range (-30～80)℃, minimum graduation value 1℃
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3 General laboratory instruments and equipment
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Related links: Sebaconitrile column conditions and chromatograms