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(Chemistry) chem a colourless gaseous hydrocarbon that is an isomer of butane and which is used as a fuel and a refrigerant. Formula: (CH3)3CH


(ˌaɪ səˈbyu teɪn, -byuˈteɪn)

a colorless, flammable gas, C4H10, used as a fuel, a refrigerant, and in the manufacture of gasoline by alkylation.
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References in periodicals archive ?
The unit is competent of generating R290, R600a and R600 with a least purity of 99.
The minibar is fitted with cyclopentane insulation and climate-friendly refrigerant R600a, making it up to 60% more efficient in terms of energy savings compared to standard minibars.
Os ensaios realizados com R600a apresentam os menores valores para o coeficiente de atrito enquanto que os ensaios conduzidos ao ar induzem os maiores valores (234% maiores).
More recently there has been a switch to a refrigerant called R600a, which doesn't affect the ozone, nor is it a significant greenhouse gas.
Yang Mianmian and colleagues from the Hater Group in Qingdao, China, devoted a paper to the servicing of R600a (isobutane) refrigerators, which it has produced since 1995 for the Chinese market.
to use the R600A refrigerant, which has a lower global warming impact than commonly used refrigerants today.
Source - CIBSE [k] Refrigerant Global Warming Potential 100 Year Time Horizon (GWP100) R11 (CFC-11) 4000 R12 (CFC-12) 8500 R22 (HCFC-22) 1700 R123 (HCFC-123) 93 R134a (HFC-134a) 1300 R404A (HFC-404A) 3800 R407C (HFC-407C) 1600 R410A (HFC-417A) 1900 R417A (HFC417A) 1950 R290 (propane) 3 R600a (isobutane) 3 R717 (ammonia) 0 R744 (Carbon 1 Dioxide)
2 gives indicated diagram obtained for analysed compressor working with R600a at ASHRAE test conditions.