-78,5°c

Toxique

Inflammable

 

  1.2.2 Les Propriétés

 

 

La Glace Carbonique a pour particularité d’être sèche, c’est à dire qu’elle se sublime (passe de l’état solide à l’état gazeux) sous un effet calorifique, et cela sans laisser d'eau car encore une fois il s'agit du gaz CO2.

La glace carbonique:

=>non toxique (dans une concentration de 0,04% dans l’air)

=>non inflammable

=>température de la glace carbonique: -78,5°c, donc un pouvoir réfrigérant ou calorique très important.

=>son pouvoir calorifique est deux fois plus important que l’eau glacée

=>La densité de la glace carbonique est de 1,2 kg-1,6 kg/dm3 (1dm3=1 litre)

 

     

 

 

 

 

 

 

 

 

Liste Propriétés Physiques

Aspect/Couleur:                                                                                                         Substance solide blanche

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Odeur:                                                                                                         Non détectable.

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Poids moléculaire:                                                                                                  44 g/mol

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Point de fusion:                                                                                                     - 56.6°C.

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Point d’ébullition:                                                                                                -78.5°C

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Point éclair:                                                                                                        Sans objet.

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Température critique:                                                                                               30°C.

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Densité relative, gaz (air=1):                                                                                    1.52

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Densité relative, liquide (eau=1):                                                                         Sans objet.

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Pression de vapeur à 20°C:                                                                                     57.3 bar

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Solubilité dans l'eau (mg/l):                                                                                           2000

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Solubilité dans des solvants organiques (préciser le solvant):                              Non connue.

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Coefficient de partage (n-octanol/eau):                                                               Sans objet.

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Viscosité:                                                                              1.472 10-4 poises (à 20°C, 1bar)

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Taux d’évaporation:                                                                                            Sans objet.

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Température d'auto inflammation:                                                                      Sans objet.

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Domaine d'inflammabilité:                                                                                   Sans objet.

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