{"id":933,"date":"2026-03-13T13:53:22","date_gmt":"2026-03-13T05:53:22","guid":{"rendered":"https:\/\/www.dry-ice-machine.com\/?p=933"},"modified":"2026-03-13T13:53:22","modified_gmt":"2026-03-13T05:53:22","slug":"what-is-dry-ice","status":"publish","type":"post","link":"https:\/\/www.dry-ice-machine.com\/vi\/what-is-dry-ice\/","title":{"rendered":"\u0110\u00e1 kh\u00f4 l\u00e0 g\u00ec?"},"content":{"rendered":"
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\n 4.5\/5 - (24 b\u00ecnh ch\u1ecdn) <\/div>\n <\/div>\n\n

In recent years, with the progress and maturity of dry ice manufacturing technology, a large number of dry ice products have become an important product with a wide range of industrial and commercial applications, especially in food freezing and transportation, hardware parts manufacturing, l\u00e0m s\u1ea1ch b\u1eb1ng \u0111\u00e1 kh\u00f4<\/a>, and many other usages, dry ice products are widely used now.<\/p>\n\n\n\n

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Kh\u1ed1i \u0111\u00e1 kh\u00f4<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Kh\u1ed1i \u0111\u00e1 kh\u00f4 c\u00f3 \u0111\u1ed9 d\u00e0y kh\u00e1c nhau<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Carbon dioxide \u1edf nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t ph\u00f2ng l\u00e0 m\u1ed9t kh\u00ed kh\u00f4ng m\u00e0u v\u00e0 c\u00f3 v\u1ecb chua nh\u1eb9, \u0111\u1ed3ng th\u1eddi c\u0169ng l\u00e0 m\u1ed9t kh\u00ed nh\u00e0 k\u00ednh ph\u1ed5 bi\u1ebfn v\u00e0 l\u00e0 m\u1ed9t trong c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a kh\u00f4ng kh\u00ed (0,03-0,04% t\u1ed5ng th\u1ec3 t\u00edch c\u1ee7a kh\u00ed quy\u1ec3n). Carbon dioxide l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 then ch\u1ed1t trong chu tr\u00ecnh cacbon, v\u00e0 n\u00f3 l\u00e0 ngu\u1ed3n cung c\u1ea5p cacbon duy nh\u1ea5t cho c\u00e1c hydrocarbon n\u00f4ng nghi\u1ec7p; N\u00f3 l\u00e0 nguy\u00ean li\u1ec7u th\u00f4 quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a th\u1ef1c v\u1eadt. N\u00f3 c\u0169ng \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 t\u1ed5ng th\u1ec3 c\u1ee7a tr\u00e1i \u0111\u1ea5t.<\/p>\n\n\n\n

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Vi\u00ean \u0111\u00e1 kh\u00f4 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 16mm<\/figcaption><\/figure>\n\n\n\n

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Vi\u00ean \u0111\u00e1 kh\u00f4 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 3mm <\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

\u0110\u00e1 kh\u00f4 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi carbon dioxide r\u1eafn<\/strong><\/strong><\/h2>\n\n\n\n

\u0110\u00e1 kh\u00f4 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 carbon dioxide r\u1eafn. \u1ede \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n b\u00ecnh th\u01b0\u1eddng, \u0111i\u1ec3m \u0111\u00f4ng c\u1ee7a carbon dioxide l\u00e0 \u00e2m 78,5 \u0111\u1ed9 C, \u0111i\u1ec1u n\u00e0y r\u1ea5t h\u1eefu \u00edch \u0111\u1ec3 gi\u1eef cho c\u00e1c v\u1eadt th\u1ec3 \u0111\u00f4ng l\u1ea1nh ho\u1eb7c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. \u0110\u1ec3 bi\u1ebfn carbon dioxide th\u00e0nh d\u1ea1ng l\u1ecfng, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c n\u00e9n \u00e1p su\u1ea5t l\u00ean \u0111\u1ebfn 5,1 atmospheres. \u0110\u00e1 kh\u00f4 kh\u00f4ng m\u00e0u, kh\u00f4ng v\u1ecb, kh\u00f4ng ch\u00e1y v\u00e0 h\u01a1i axit. \u0110\u00e1 kh\u00f4 c\u00f3 m\u1eadt \u0111\u1ed9 thay \u0111\u1ed5i nh\u01b0ng th\u01b0\u1eddng kho\u1ea3ng 1,4 \u0111\u1ebfn 1,6 g\/cm3. \u0110\u00e1 kh\u00f4 c\u00f3 th\u1ec3 l\u00e0m \u0111\u00f4ng l\u1ea1nh v\u00e0 l\u00e0m m\u00e1t c\u00e1c v\u1eadt th\u1ec3 m\u1ed9t c\u00e1ch nhanh ch\u00f3ng. Hi\u1ec7n nay, \u0111\u00e1 kh\u00f4 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u1edf nhi\u1ec1u c\u1ea5p \u0111\u1ed9, \u0111\u00e1 kh\u00f4 trong qu\u00e1 tr\u00ecnh l\u00e0m \u1ea5m l\u00e0 s\u1ef1 th\u0103ng hoa tr\u1ef1c ti\u1ebfp t\u1eeb r\u1eafn th\u00e0nh kh\u00ed, tr\u1ef1c ti\u1ebfp chuy\u1ec3n th\u00e0nh kh\u00ed v\u00e0 b\u1ecf qua qu\u00e1 tr\u00ecnh l\u1ecfng. T\u00ednh ch\u1ea5t \u0111\u1ed9c \u0111\u00e1o n\u00e0y c\u1ee7a \u0111\u00e1 kh\u00f4 c\u00f3 ngh\u0129a l\u00e0 khi c\u00e1c h\u1ea1t \u0111\u00e1 kh\u00f4 \u0111\u01b0\u1ee3c phun l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3, ch\u00fang s\u1ebd \u0111\u01a1n gi\u1ea3n bi\u1ebfn m\u1ea5t, ch\u1ec9 \u0111\u1ec3 l\u1ea1i c\u00e1c ch\u1ea5t b\u1ea9n ban \u0111\u1ea7u c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch.<\/p>\n\n\n\n

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L\u00e0m vi\u00ean \u0111\u00e1 kh\u00f4<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t m\u00e1y l\u00e0m \u0111\u00e1 kh\u00f4<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

\u1ee8ng d\u1ee5ng c\u1ee7a \u0111\u00e1 kh\u00f4<\/strong><\/h2>\n\n\n\n

H\u00e0m l\u01b0\u1ee3ng vi\u00ean \u0111\u00e1 kh\u00f4 d\u00f9ng \u0111\u1ec3 l\u00e0m s\u1ea1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0 h\u00e0m l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c FDA, EPA v\u00e0 USDA ph\u00ea duy\u1ec7t. Carbon dioxide l\u00e0 m\u1ed9t lo\u1ea1i kh\u00ed h\u00f3a l\u1ecfng kh\u00f4ng \u0111\u1ed9c h\u1ea1i, r\u1ebb ti\u1ec1n v\u00e0 d\u1ec5 l\u01b0u tr\u1eef t\u1ea1i n\u01a1i l\u00e0m vi\u1ec7c. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 n\u00f3 kh\u00f4ng d\u1eabn \u0111i\u1ec7n v\u00e0 kh\u00f4ng ch\u00e1y.<\/p>\n\n\n\n

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C\u00e1ch s\u1eed d\u1ee5ng \u0111\u00e1 kh\u00f4<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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S\u01b0\u01a1ng m\u00f9 giai \u0111o\u1ea1n b\u0103ng kh\u00f4<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Carbon dioxide l\u00e0 s\u1ea3n ph\u1ea9m ph\u1ee5 t\u1ef1 nhi\u00ean c\u1ee7a nhi\u1ec1u qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u00ean men v\u00e0 l\u1ecdc d\u1ea7u. Carbon dioxide \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thu th\u1eadp v\u00e0 l\u01b0u tr\u1eef \u0111\u1ec3 s\u1eed d\u1ee5ng khi c\u1ea7n thi\u1ebft. C\u00e1c h\u1ea1t \u0111\u00e1 kh\u00f4 th\u0103ng hoa tr\u1edf l\u1ea1i kh\u00ed quy\u1ec3n trong qu\u00e1 tr\u00ecnh l\u00e0m s\u1ea1ch, kh\u00f4ng t\u1ea1o ra carbon dioxide m\u1edbi m\u00e0 gi\u1ea3i ph\u00f3ng s\u1ea3n ph\u1ea9m ph\u1ee5 carbon dioxide ban \u0111\u1ea7u.<\/p>\n\n\n\n

To produce dry ice in different forms, you can use m\u00e1y t\u1ea1o vi\u00ean \u0111\u00e1 kh\u00f4<\/a> for granular dry ice or m\u00e1y l\u00e0m \u0111\u00e1 kh\u00f4<\/a> for solid dry ice blocks. For more information about dry ice applications, you can also read our articles on application of dry ice in various industries<\/a> V\u00e0 dry ice pellets vs blocks<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 v\u00e0 tr\u01b0\u1edfng th\u00e0nh c\u1ee7a c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t \u0111\u00e1 kh\u00f4, m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn s\u1ea3n ph\u1ea9m \u0111\u00e1 kh\u00f4 \u0111\u00e3 tr\u1edf th\u00e0nh s\u1ea3n ph\u1ea9m quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong \u0111\u00f4ng l\u1ea1nh v\u00e0 v\u1eadn chuy\u1ec3n th\u1ef1c ph\u1ea9m, s\u1ea3n xu\u1ea5t linh ki\u1ec7n ph\u1ea7n c\u1ee9ng, \u0111\u00e1 kh\u00f4. l\u00e0m s\u1ea1ch v\u00e0 nhi\u1ec1u c\u00f4ng d\u1ee5ng kh\u00e1c, c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00e1 kh\u00f4 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i\u2026 \u0110\u1ecdc th\u00eam<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"wpai_generated_summary":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-933","post","type-post","status-publish","format-standard","hentry","category-dry-ice-news"],"_links":{"self":[{"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/posts\/933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/comments?post=933"}],"version-history":[{"count":1,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/posts\/933\/revisions"}],"predecessor-version":[{"id":16569,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/posts\/933\/revisions\/16569"}],"wp:attachment":[{"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/media?parent=933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/categories?post=933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dry-ice-machine.com\/vi\/wp-json\/wp\/v2\/tags?post=933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}