Content deleted Content added
Narky Blert (talk | contribs) Link to DAB page repaired |
No edit summary |
||
(6 intermediate revisions by 5 users not shown) | |||
Line 21: | Line 21: | ||
| CASNo_Ref = {{cascite|correct|??}} |
| CASNo_Ref = {{cascite|correct|??}} |
||
| CASNo = 645-92-1 |
| CASNo = 645-92-1 |
||
| UNII_Ref = {{fdacite|correct|FDA}} |
|||
| UNII = LC8G9556Q0 |
|||
| EINECS = |
| EINECS = |
||
| PubChem = 12583 |
| PubChem = 12583 |
||
Line 46: | Line 48: | ||
| pKb = }} |
| pKb = }} |
||
|Section7={{Chembox Hazards |
|Section7={{Chembox Hazards |
||
| EUClass = |
|||
| MainHazards = |
| MainHazards = |
||
| NFPA-H = |
| NFPA-H = |
||
Line 52: | Line 53: | ||
| NFPA-R = |
| NFPA-R = |
||
| NFPA-S = |
| NFPA-S = |
||
| RPhrases = |
|||
| SPhrases = |
|||
| RSPhrases = |
|||
| FlashPt = |
| FlashPt = |
||
| AutoignitionPt = |
| AutoignitionPt = |
||
Line 61: | Line 59: | ||
}} |
}} |
||
'''Ammeline''' ('''4,6-diamino-2-hydroxy-1,3,5-triazine''') is a triazine [[derivative (chemistry)|derivative]]. It is the hydrolysis product of [[melamine]]. |
'''Ammeline''' ('''4,6-diamino-2-hydroxy-1,3,5-triazine''') is a triazine [[derivative (chemistry)|derivative]]. It is the hydrolysis product of [[melamine]].<ref>{{cite journal | author = B. Bann and S.A. Miller | title = Melamines and derivatives of melamine | journal = [[Chemical Reviews]] | doi = 10.1021/cr50019a004 | volume = 58 | pages = 131–172 | date = 1958}}</ref> |
||
==Synthesis== |
==Synthesis== |
||
Line 74: | Line 72: | ||
==References== |
==References== |
||
{{reflist}} |
|||
{{nofootnotes|date=October 2015}} |
|||
* {{cite journal | author = B. Bann and S.A. Miller | title = Melamines and derivatives of melamine | journal = [[Chemical Reviews]] | doi = 10.1021/cr50019a004 | volume = 58 | pages = 131–172 | date = 1958}} |
|||
[[Category:Triazines]] |
[[Category:Triazines]] |
||
[[Category:Aromatic amines]] |
[[Category:Aromatic amines]] |
||
[[Category:Phenols]] |
Latest revision as of 14:53, 5 January 2024
| |||
Names | |||
---|---|---|---|
Preferred IUPAC name
4,6-Diamino-1,3,5-triazin-2-ol | |||
Other names
2,4-Diamino-6-hydroxy-1,3,5-triazine
4,6-Diamino-2-hydroxy-1,3,5-triazine 4,6-diamino-1,3,5-triazin-2(1H)-one | |||
Identifiers | |||
3D model (JSmol)
|
|||
ChEBI | |||
ChemSpider | |||
ECHA InfoCard | 100.010.415 | ||
KEGG | |||
PubChem CID
|
|||
UNII | |||
CompTox Dashboard (EPA)
|
|||
| |||
| |||
Properties | |||
C3H5N5O | |||
Molar mass | 127.107 g·mol−1 | ||
Appearance | White powder | ||
Melting point | N/A (decomposes before melting) | ||
Trace | |||
Solubility | Soluble in aqueous alkalies and mineral acids, but not acetic acid | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Ammeline (4,6-diamino-2-hydroxy-1,3,5-triazine) is a triazine derivative. It is the hydrolysis product of melamine.[1]
Synthesis[edit]
Ammeline can be synthesized by the pyrolysis of urea or the condensation reaction among 2 moles of dicyandiamide and 1 mole of biuret.
- 2 C2H4N4 + C2H5N3O2 → 2C3H5N5O + NH3
Chemical properties[edit]
Ammeline is weakly acidic with pKa ~9. It can form nitrate, sulfate, chromate, and oxalate salts. Ammeline reacts with boiling dilute hydrochloric acid to form melem and ammonia.
Ammeline is the first step in melamine hydrolysis. Further hydrolysis (e.g. boiling ammeline with dilute alkali) yields ammelide.
References[edit]
- ^ B. Bann and S.A. Miller (1958). "Melamines and derivatives of melamine". Chemical Reviews. 58: 131–172. doi:10.1021/cr50019a004.