Dicyandiamide

• Formula: C₂H₄N₄
• Molecular weight: 84.0800
• IUPAC Standard InChI: InChI=1S/C2H4N4/c3-1-6-2(4)5/h(H4,4,5,6) Copy

  
• IUPAC Standard InChIKey: QGBSISYHAICWAH-UHFFFAOYSA-N Copy
• CAS Registry Number: 461-58-5
• Chemical structure:
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• Other names: Guanidine, cyano-; Cyanoguanidine; Dicyanodiamide; N-Cyanoguanidine; Pyroset DO; 1-Cyanoguanidine; 2-Cyanoguanidine; Guanidine-1-carbonitrile; NCN=C(NH2)2; Dicyanediamide; Dicyandiamin; ACR-H 3636; Araldite HT 986; Araldite XB 2879B; Araldite XB 2979B; Bakelite VE 2560; Epicure DICY 15; Epicure DICY 7; Guanidine, N-cyano-; NSC 2031; XB 2879B
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• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

Enthalpy of fusion

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C₂H₄N₄⁺ (ion structure unspecified)

Ionization energy determinations

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

De Wit, Van Miltenburg, et al., 1983
De Wit, H.G.M.; Van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulphur 1. Vapour pressures and enthalpies of sublimation, The Journal of Chemical Thermodynamics, 1983, 15, 7, 651-663, https://doi.org/10.1016/0021-9614(83)90079-4 . [all data]

Zhang, Tan, et al., 1997
Zhang, Ji-Biao; Tan, Zhi-Cheng; Meng, Shuang-He; Li, Shao-Hui; Zhang, Li-Ming, Heat capacity and thermal decomposition of dicyandiamide, Thermochimica Acta, 1997, 307, 1, 11-15, https://doi.org/10.1016/S0040-6031(97)00323-7 . [all data]

Klasinc, Butkovic, et al., 1980
Klasinc, L.; Butkovic, V.; Novak, I.; Mihalic, M.; Toso, R.; Sunjic, V., Application of photoelectron spectroscopy to biologically active molecules and their constituent parts. VII. N-cyanoazomethines, Gazz. Chim. Ital., 1980, 110, 287. [all data]

Notes

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• Symbols used in this document:
  

  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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