Heptane , >99%(GC) , 142-82-5
Synonym(s):
Heptane;n-Heptane, Heptane;n-Heptane, high purity solvents;n-Heptane, Petroleum Heptane
CAS NO.：142-82-5
Empirical Formula: C7H16
Molecular Weight: 100.2
MDL number: MFCD00009544
EINECS: 205-563-8
PRODUCT Properties
| Melting point: | −91 °C(lit.) |
| Boiling point: | 98 °C(lit.) |
| Density | 0.684 g/mL at 20 °C |
| vapor density | 3.5 (vs air) |
| vapor pressure | 40 mm Hg ( 20 °C) |
| refractive index | n |
| Flash point: | 30 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | acetone: miscible(lit.) |
| form | Liquid |
| pka | >14 (Schwarzenbach et al., 1993) |
| Specific Gravity | 0.684 (20/4℃) |
| color | ≤10(APHA) |
| Odor | Gasoline. |
| Relative polarity | 0.012 |
| explosive limit | 1-7%(V) |
| Odor Threshold | 0.67ppm |
| Water Solubility | practically insoluble |
| λmax | λ: 200 nm Amax: ≤1.0 λ: 225 nm Amax: ≤0.10 λ: 250 nm Amax: ≤0.01 λ: 300-400 nm Amax: ≤0.005 |
| Merck | 14,4659 |
| BRN | 1730763 |
| Henry's Law Constant | 0.901, 1.195, and 1.905(atm?m3/mol) at 26.0, 35.8, and 45.0 °C, respectively (dynamic headspace, Hansen et al.,
1995) |
| Exposure limits | NIOSH REL: TWA 85 ppm (350 mg/m3), 15-min ceiling 440 ppm (1,800
mg/m3), IDLH 750 ppm; OSHA PEL: TWA 500 ppm (2,000 mg/m3); ACGIH TLV: TWA 400
ppm, STEL 500 ppm (adopted). |
| Dielectric constant | 1.9（20℃） |
| Stability: | Stable. Incompatible with oxidizing agents, chlorine, phosphorus. Highly flammable. Readily forms explosive mixtures with air. |
| InChIKey | IMNFDUFMRHMDMM-UHFFFAOYSA-N |
| LogP | 4.660 |
Description and Uses
n-Heptane is a clear liquid which is highlyflammable and volatile with a mild, gasoline-like odor. Theodor threshold is 40- 547 ppm; also reported at 230 ppm.Molecular weight = 100.23; Specific gravity (H2O:l)= 0.68;Boiling point = 98.39C; FreezingMelting point= - 90.6℃;Vapor pressure = 40 mmHg at 25℃; Flash point= 一4℃;Autoignition temperature = 204℃.285℃. Explosivelimits:LEL= 1.1%; UEL= 6.7%.Hazard Identification(basedonNFPA-704 M Rating System): Health 1,Flammability 3, Reactivity 0. Practically insoluble in water;solubility = 0.0003%.
Suitable for HPLC, spectrophotometry, environmental testing
Safety
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H225-H304-H315-H336-H410 |
| Precautionary statements | P210-P233-P273-P301+P310-P303+P361+P353-P331 |
| Hazard Codes | F,Xn,N |
| Risk Statements | 11-38-50/53-65-67 |
| Safety Statements | 9-16-29-33-60-61-62-23 |
| OEB | A |
| OEL | TWA: 85 ppm (350 mg/m3), Ceiling: 440 ppm (1800 mg/m3) [15-minute] |
| RIDADR | UN 1206 3/PG 2 |
| WGK Germany | 3 |
| RTECS | MI7700000 |
| F | 3-10 |
| Autoignition Temperature | 433 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29011000 |
| Toxicity | LC (2 hr in air) in mice: 75 mg/l (Lazarew) |
| IDLA | 750 ppm |
