551-06-4
1-Naphthyl isothiocyanate
CAS: 551-06-4
Molecular Formula: C11H7NS
551-06-4 - Names and Identifiers
| Name | 1-Naphthyl isothiocyanate |
| Synonyms | 1-Naphthyl senfoel 1-NAPTHYL ISOTHIOCYANATE 1-Naphthyl isothiocyanate 1-Isothiocyanatenaphthalene 1-isothiocyanate-naphthalene |
| CAS | 551-06-4 |
| EINECS | 208-990-8 |
| InChI | InChI=1/C11H7NS/c13-8-12-11-7-3-5-9-4-1-2-6-10(9)11/h1-7H |
551-06-4 - Physico-chemical Properties
| Molecular Formula | C11H7NS |
| Molar Mass | 185.24 |
| Density | 1.1142 (rough estimate) |
| Melting Point | 55.5-57°C(lit.) |
| Boling Point | 190 °C(Press: 20 Torr) |
| Water Solubility | insoluble |
| Appearance | Fine Crystalline Powder |
| Color | Yellow |
| Merck | 14,6411 |
| BRN | 637868 |
| Storage Condition | 2-8°C |
| Stability | Stable, but moisture sensitive. Incompatible with strong oxidizing agents. |
| Sensitive | Moisture Sensitive |
| Refractive Index | 1.5500 (estimate) |
| Physical and Chemical Properties | White needle-like crystals. Melting Point: 58 °c. Soluble in ether, benzene, hot alcohol, acetone, carbon tetrachloride, insoluble in water. Odorless and tasteless. |
551-06-4 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R20/21 - Harmful by inhalation and in contact with skin. R25 - Toxic if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R42 - May cause sensitization by inhalation R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | NX9100000 |
| TSCA | Yes |
| HS Code | 29309090 |
| Hazard Class | 6.1 |
| Packing Group | II |
551-06-4 - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used as analytical reagent and organic synthesis intermediate. |
| Production method | Made by heating and refluxing α-naphthylthiourea in chlorobenzene. Add α-naphthylthiourea to chlorobenzene, heat and reflux to dissolve, and continue to reflux for 8 hours. After recovering chlorobenzene under reduced pressure, it is cooled and crystallized, extracted with hexane, recovered hexane, and obtained crude product. After recrystallization with acetone, the finished product is obtained with a yield of more than 85%. |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 200 mg/kg; Oral-mouse LD50: 105 mg/kg |
| flammability hazard characteristics | Open flame is combustible; combustion releases toxic nitrogen oxides and sulfur oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants, acids and food additives |
| fire extinguishing agent | mist water, foam, carbon dioxide, sand (acid and alkali fire extinguishing agent is prohibited) |
Last Update：2024-04-09 02:00:05
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