# 2,2-Dimethylpropane — CGA cylinder valve connection number by gas For 2,2-Dimethylpropane, source chart is Matheson; cga connection number is 510; which chart the row is from is Pure Gases, recorded from its source on 2026-08-28. - **Gas:** 2,2-Dimethylpropane _(verified: appears in the quote below)_ - **Source chart:** Matheson _(our reading, not quoted from the source)_ - **CGA connection number:** 510 _(verified: appears in the quote below)_ - **Which chart the row is from:** Pure Gases _(our reading, not quoted from the source)_ ## What the source says > 2,2-Dimethylpropane 510 ## Source - https://us.nipponsanso.com/pdfs/gasequipment/CGA-Connection-Chart.pdf Last verified: 2026-08-28. Review by: 2028-08-27. Part of [CGA cylinder valve connection number by gas](https://referencesource.org/cga-cylinder-valve-connection-by-gas/).