| 融点 |
153-159 °C (lit.) |
| 沸点 |
310 °C (decomp) |
| かさ密度 |
560kg/m3 |
| 比重(密度) |
1.67 g/cm3 at 20 °C |
| 蒸気密度 |
7.26 (vs air) |
| 蒸気圧 |
<0.1 hPa (20 °C) |
| 屈折率 |
1.493~1.509 |
| FEMA |
2306 | CITRIC ACID |
| 闪点 |
100 °C |
| 貯蔵温度 |
2-8°C |
| 溶解性 |
Citric acid also dissolves in absolute (anhydrous) ethanol (76 parts of citric acid per 100 parts of ethanol) at 15 °C. |
| 外見 |
grit |
| 酸解離定数(Pka) |
3.14(at 20℃) |
| 色 |
White |
| 臭い (Odor) |
Odorless |
| PH |
3.24(1 mM solution);2.62(10 mM solution);2.08(100 mM solution); |
| においのタイプ |
odorless |
| 由来生物 |
synthetic |
| 爆発限界(explosive limit) |
8%, 65°F |
| 水溶解度 |
soluble in Water (1174g/L at 10°C, 1809g/L at 30°C, 3825g/L at 80°C). |
| Sensitive |
Hygroscopic |
| 極大吸収波長 (λmax) |
λ: 260 nm Amax: 0.20
λ: 280 nm Amax: 0.10 |
| Merck |
14,2326 |
| JECFA Number |
218 |
| BRN |
782061 |
| Henry's Law Constant |
3.1×1015 mol/(m3Pa) at 25℃, Burkholder et al. (2019) |
| 安定性： |
Stable. Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates. |
| 化粧品成分の機能 |
CHELATING
FRAGRANCE
BUFFERING |
| 美容成分審査 |
Citric acid (77-92-9) |
| InChI |
1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12) |
| InChIKey |
KRKNYBCHXYNGOX-UHFFFAOYSA-N |
| SMILES |
OC(=O)CC(O)(CC(O)=O)C(O)=O |
| LogP |
-1.64 |
| CAS データベース |
77-92-9(CAS DataBase Reference) |
| NISTの化学物質情報 |
1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9) |
| EPAの化学物質情報 |
Citric acid (77-92-9) |
