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Agamassan — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Agamassan
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-07T18:43:10.932Z
SHA-256 of the archived text: d6d1d5885315b9d72ca2fac84c01edecb7a8076b395bf982d27e101fe6a1cbea
Stable URL of this page: https://metraipolis.com/documento/dc_edd5bb95783f

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Agamassan — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Agamassan (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_edd5bb95783f (Metraipolis archive dc_edd5bb95783f, sha256 d6d1d5885315b9d72ca2fac84c01edecb7a8076b395bf982d27e101fe6a1cbea)

BibTeX

@misc{dcedd5bb95783f,
  title = {Agamassan — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Agamassan},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_edd5bb95783f; sha256 d6d1d5885315b9d72ca2fac84c01edecb7a8076b395bf982d27e101fe6a1cbea},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Agamassan. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Agamassan is a porous substrate used to safely absorb acetylene and thus allow the transport, storage and commercial use of the otherwise unstable gas. It was developed and patented by the Swedish Nobel Laureate and industrialist Gustaf Dalén. Dalén was prominent in developing applications for acetylene. Acetylene can readily explode when in liquid or solid form or while being pressurized, if it is pure. Dalén himself was blinded in an acetylene explosion. In 1896, French chemists Georges Claude and Albert Hess discovered that large quantities of acetylene could be dissolved in acetone and rendered nonexplosive. As the liquid was reduced by consumption or cooling, explosive acetylene gas would collect in the space above the liquid's surface. The solution was to compress acetylene in a porous medium. Before Dalén's work, numerous attempts were made to find a mass sufficiently elastic to withstand shock without crumbling and producing cavities filled with explosive acetylene gas. Acetylene is shipped and stored in metal cylinders filled with agamassan, which is half-filled with dimethylformamide (DMF) or acetone as a solvent. The acetylene is dissolved in the DMF or acetone. The solvent holds many times the volume at atmospheric pressure of acetylene. Such cylinders are safe to transport and use as long as they are not opened sideways, to prevent the solvent from leaving the cylinder. Agamassan was devised as a compound containing asbestos and diatomaceous earth. Fine asbestos can be used at the bottom of the tank, balsa wood and infusorial earth in the bottom third, and long fiber asbestos at the top and an asbestos cloth just before the regulator. Calcium silicate hydrate can also be used as the filler material. In Swedish, the porous filler is known as "AGA-massan", which would translate as "AGA mass", "AGA body", or "AGA compound". AGA was the company Dalén founded. The compound originally consisted of, among other things, asbestos, cement, and coal. The 1930 US patent also mentions kieselguhr (diatomaceous earth).

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Agamassan» — https://en.wikipedia.org/wiki/Agamassan
Wikidata Q4691162: «porous substrate used to transport and store acetylene» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q4691162
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Agamassan?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1373933787, consultata il 2026-11-07T18:38:27.129Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 6e683cf9a75b26f168f5bdc1a464172ed841c6364e72eccd1013628a587939a6