# Jī-sng-hòa thòaⁿ-sò͘

Jī-sng-hòa thòaⁿ-sò͘|  |
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| --- | --- |
| Ball-and-stick model of carbon dioxide | Space-filling model of carbon dioxide |

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| Hō-miâ |
| Kî-tha hō-miâ

* Carbonic acid gas
* Carbonic anhydride
* Carbonic oxide
* Carbon oxide
* Carbon(IV) oxide
* Dry ice (solid phase)
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| Sek-pia̍t-hō |
| CAS Number | * 124-38-9Y
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| 3D model (JSmol) | * Interactive image
* Interactive image
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| 3DMet | B01131 |
| Beilstein Reference | 1900390 |
| ChEBI | * CHEBI:16526Y
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| ChEMBL | * ChEMBL1231871N
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| ChemSpider | * 274Y
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| ECHA InfoCard | 100.004.271 |
| EC Number | 204-696-9 |
| E number | E290 (preservatives) |
| Gmelin Reference | 989 |
| KEGG | * D00004Y
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| MeSH | Carbon+dioxide |
| PubChem CID | * 280
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| RTECS number | FF6400000 |
| UNII | * 142M471B3JY
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| UN number | 1013 (gas), 1845 (solid) |
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InChI
* InChI=1S/CO2/c2-1-3YKey: CURLTUGMZLYLDI-UHFFFAOYSA-NY
* InChI=1/CO2/c2-1-3Key: CURLTUGMZLYLDI-UHFFFAOYAO
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SMILES
* O=C=O
* C(=O)=O
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| Sèng-chit |
| Hòa-ha̍k-sek | CO2 |
| Mole chit-liōng | 44.01 g·mol−1   |
| Gōa-māu | Bû-sek khì-thé |
| Khì-bī | * Kē lông-tō͘: bô
* Koân lông-tō͘: lāi; sng
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| Bi̍t-tō͘ | * 1562 kg/m3 (1 atm kiam −78.5 °C ê sî kò͘-thé)
* 1101 kg/m3 (pá-hô −37°C ê sî e̍k-thé)
* 1.977 kg/m3 (1 atm kiam 0 °C ê sî khì-thé)
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| Iûⁿ-tiám |  −56.6 °C; −69.8 °F; 216.6 K (Sam-têng-tiám tī 5.1 atm) |
| Sublimation conditions | −78.5 °C; −109.2 °F; 194.7 K (1 atm) |
| Tī chúi ê iûⁿ-kái-tō͘ | 1.45 g/L at 25 °C (77 °F), 100 kPa |
| Cheng-khì-ap | 5.73 MPa (20 °C) |
| Acidity (p*K*a) | 6.35, 10.33 |
| Chû-hòa-lu̍t (χ) | −20.5·10−6 cm3/mol |
| Khut-chiat-lu̍t (*n*D) | 1.00045 |
| Viscosity | 0.07 cP at −78.5 °C |
| Dipole moment | 0 D |
| Kò͘-chō |
| Kiat-chiⁿ kò͘-chō | trigonal |
| Molecular shape | linear |
| Jia̍t-hòa-ha̍k |
| Heat capacity (*C*) | 37.135 J/K mol |
| Piau-chún mole entropy (*S*~~o~~298) | 214 J·mol−1·K−1 |
| Piau-chún hêng-sêng enthalpy (Δf*H*~~o~~298) | −393.5 kJ·mol−1 |
| Io̍h-lí-ha̍k |
| ATC code | V03AN02 (WHO)  |
| Gûi-hiám |
| An-choân chu-liāu-toaⁿ | Sigma-Aldrich |
| NFPA 704 |
0
2
0SA |
| Lethal dose or concentration (*LD*, *LC*): |
| *LC*Lo (lowest published) | 90,000 ppm (human, 5 min) |
| Bí-kok kiān-hong pī-pha̍k chè-hān (NIOSH): |
| PEL (Ē-thong-kòe) | TWA 5000 ppm (9000 mg/m3) |
| REL (Chhui-chiàn) | TWA 5000 ppm (9000 mg/m3) ST 30,000 ppm (54,000 mg/m3) |
| IDLH (Chek-sî gûi-hiám) | 40,000 ppm |
| Koan-liân hòa-ha̍p-bu̍t |
| Kî-tha im-lî-chú | * Jī-liû-hòa thòaⁿ-sò͘
* Jī-selenium-hòa thòaⁿ-sò͘
* Jī-tellurium-hòa thòaⁿ-sò͘
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| Kî-tha iông-lî-chú | * Jī-sng-hòa ke-sò͘
* Jī-sng-hòa germanium
* Jī-sng-hòa siah
* Jī-sng-hòa iân
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| Related thòaⁿ-sò͘ sng-hòa-bu̍t | * It-sng-hòa thòaⁿ-sò͘
* A-sng-hòa thòaⁿ-sò͘
* It-sng-hòa Jī-thòaⁿ-sò͘
* Sam-sng-hòa thòaⁿ-sò͘
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| Koan-liân hòa-ha̍p-bu̍t | * Thòaⁿ-sng
* Liû-hòa carbonyl
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| Tû-liáu te̍k-pia̍t chí chhut, chu-liāu sī kun-kù bu̍t-chit ê piau-chún chōng-thài (tī 25 °C [77 °F], 100 kPa). |
| N cha-chèng (YN sī siáⁿ ?) |
| Infobox chham-chiàu |
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**Jī-sng-hòa thoàⁿ-sò͘** (二酸化炭素, hòa-ha̍k-sek: CO2), sī chi̍t khoán hòa-ha̍p-bu̍t, sī 2-ê sng-sò͘ kiat 1-ê thòaⁿ-sò͘, in chi kan sī kiōng-iú (covalent) ê jī-tiông kiat-ha̍p (double bond).

Chit chióng hòa-ha̍p-bu̍t bô bī bô sek-tī, jî-chhiáⁿ tùi Tē-kiû sèⁿ-miā ū pit-iàu-sèng. I tī Tē-kiû tāi-khì tiong ê bi̍t-tō͘ tāi-khài sī 400 ppm.

Jī-sng-hòa thòaⁿ-sò͘ ê chū-jiân lâi-goân ū hóe-soaⁿ, un-chôaⁿ téng-téng, goân-lí sī in-ūi thòaⁿ-sng-iâm (carbonate) iûⁿ-kái tī chúi kap sng--nih.

## Bu̍t-lí sèng-chit

Jī-sng-hòa thòaⁿ-sò͘ sī bû-sek--ê. Tī kē lông-tō͘ ê sî khì-thé sī bû-khì-bī--ê; chóng-sī, tī chhiong-chiok ê koân lông-tō͘ chōng-hóng, ē chhut ē-lāi--ê, sng-sèng ê khì-bī. Tī phiau-chún ap-le̍k kap ūn-tōng, jī-sng-hòa thòaⁿ-sò͘ ê bi̍t-tō͘ sī iok-lio̍k 1.98 kg/m3, chha-put-to khong-khì ê 1.67 pōe.

## Chham-chiàu