A7715112
1,2,3-Trimethylbenzene , Analysis standard , 526-73-8
Synonym(s):
Hemellitol
CAS NO.：526-73-8
Empirical Formula: C9H12
Molecular Weight: 120.19
MDL number: MFCD00008520
EINECS: 208-394-8
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | −25 °C(lit.) |
| Boiling point: | 175-176 °C(lit.) |
| Density | 0.894 g/mL at 25 °C(lit.) |
| vapor density | 4.15 (vs air) |
| vapor pressure | 3.4 mm Hg ( 37.7 °C) |
| refractive index | n |
| Flash point: | 119 °F |
| solubility | Soluble in acetone, alcohol, benzene, and ether (Weast, 1986) |
| pka | >14 (Schwarzenbach et al., 1993) |
| color | Colorless to Light yellow |
| Odor Threshold | 0.032ppm |
| Water Solubility | 65.51mg/L(25 ºC) |
| BRN | 1903410 |
| Henry's Law Constant | 3.18 at 25 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA for mixed
isomers 25 ppm (adopted). |
| Dielectric constant | 2.6600000000000001 |
| Stability: | Stable. Flammable. Incompatible with strong oxidizing agents. |
| LogP | 3.660 |
Description and Uses
Raw material for chemical synthesis.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H226-H315-H319-H335 |
| Precautionary statements | P210-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 10-37-36/37/38 |
| Safety Statements | 16-26 |
| RIDADR | UN 3295 3/PG 3 |
| OEB | A |
| OEL | TWA: 25 ppm (125 mg/m3) |
| WGK Germany | 3 |
| RTECS | DC3300000 |
| Autoignition Temperature | 878 °F |
| HazardClass | 3.2 |
| PackingGroup | III |
| HS Code | 2902900000 |
