Name | 2-imidazol-4-ylethylamine |
Synonyms | Eramine Histamine Histamine Base L-Histamin base Histamine (8CI) Histamine, Free Base 4-Imidazoleethylamine 5-Imidazoleethylamine β-Aminoethylglyoxaline 4-(2-aminoethyl)-imidazol 1H-Imidazole-4-ethanamine 2-imidazol-4-ylethylamine 2-(4-Imidazolyl)ethanamine 2-(4-Imidazolyl)ethylamine 1-(1H-imidazol-4-yl)ethanamine 2-(1H-imidazol-4-yl)ethanamine 4-(2-Aminoethyl)-1H-imidazole histamine free base crystalline 1H-Imidazole-4-ethanamine (9CI) 2-(1H-imidazol-5-yl)ethanamine dihydrochloride |
CAS | 51-45-6 |
EINECS | 200-100-6 |
InChI | InChI=1/C5H9N3/c1-4(6)5-2-7-3-8-5/h2-4H,6H2,1H3,(H,7,8) |
InChIKey | NTYJJOPFIAHURM-UHFFFAOYSA-N |
Molecular Formula | C5H9N3 |
Molar Mass | 111.15 |
Density | 0.9902 (rough estimate) |
Melting Point | 83-84 °C (lit.) |
Boling Point | 167 °C/0.8 mmHg (lit.) |
Flash Point | 166°C |
Water Solubility | Soluble in water, alcohol, and hot chloroform. |
Solubility | Easily soluble in water, ethanol and hot chloroform, slightly soluble in ether. |
Vapor Presure | 0.000673mmHg at 25°C |
Appearance | White needle crystal |
Color | White to light yellow |
Merck | 13,4739 |
BRN | 2012 |
pKa | 6.04(at 25℃) |
Storage Condition | -20°C |
Sensitive | Easy to absorb moisture and `sensitive` to air. |
Refractive Index | 1.4690 (estimate) |
MDL | MFCD00005210 |
Physical and Chemical Properties | Histamine phosphate is a colorless crystal or white crystalline powder, soluble in water. It is an active amine compound. As a chemical conduction substance in the body, histamine can affect the response of many cells, including allergies, inflammation, etc., can also affect the brain nerve conduction, will cause drowsiness and other effects. |
Hazard Symbols | Xn - Harmful |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R42/43 - May cause sensitization by inhalation and skin contact. |
Safety Description | S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 2811 6.1/PG 3 |
WGK Germany | 3 |
RTECS | MS1050000 |
FLUKA BRAND F CODES | 3-10-23 |
TSCA | Yes |
HS Code | 29332900 |
Hazard Class | 6.1(b) |
Packing Group | III |
Toxicity | LD50 i.p. in mice: 2020 mg/kg (Nagai) |
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