beta-Naphthyl mercaptan
2-Naphthalenethiol
CAS: 91-60-1
Molecular Formula: C10H7SH
beta-Naphthyl mercaptan - Names and Identifiers
| Name | 2-Naphthalenethiol |
| Synonyms | 2-naphthylthiol 2-Naphthyl thiol 2-Naphthalenethiol 2-Metcaptonaphthalene beta-naphthylmercaptan beta-Naphthyl mercaptan beta-Mercaptonaphthalene mercaptanbeta-naphtalenique naphthalenethiol(non-specificname) |
| CAS | 91-60-1 |
| EINECS | 202-082-5 |
| InChI | InChI=1/C10H8S/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7,11H/p-1 |
beta-Naphthyl mercaptan - Physico-chemical Properties
| Molecular Formula | C10H7SH |
| Molar Mass | 160.24 |
| Density | 1.22 |
| Melting Point | 79-83℃ |
| Boling Point | 286°C at 760 mmHg |
| Flash Point | 134.2°C |
| Water Solubility | Soluble in alcohol, dipropylene glycol. Soluble in water 34.4 mg/L @ 25°C. |
| Vapor Presure | 0.00467mmHg at 25°C |
| Storage Condition | Room Temprature |
| Sensitive | Sensitive to air |
| Refractive Index | 1.589-1.591 |
| MDL | MFCD00004086 |
| Physical and Chemical Properties | Chemical properties colorless crystal. Melting point 81 ℃. Boiling point 286 ℃,146.3 ℃(1.33kPa). Easily soluble in ethanol, ether, petroleum ether, slightly soluble in water. It can volatilize with water vapor and is easily oxidized into sulfide in the air. Has a disgusting smell. |
| Use | Use in the rubber industry as a regeneration activator, suitable for low temperature use, but the activation effect is not as good as the Mang group disulfide, and the reclaimed rubber has an unpleasant smell. General dosage of 0.1-1.5%, the product can also be used as antioxidant, plasticizer and organic synthesis of intermediates. 2-naphthol toxic, can cause dermatitis and ulcers. |
beta-Naphthyl mercaptan - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 3335 |
beta-Naphthyl mercaptan - Upstream Downstream Industry
beta-Naphthyl mercaptan - Introduction
www.aladdin-reagent.com boiling point: 286°C melting point: 79-81°C
Last Update：2022-10-16 17:30:04
beta-Naphthyl mercaptan - Nature
| melting point | 79-81°C (lit.) |
| boiling point | 286°C (lit.) |
| density | 1.22 |
| FEMA | 3314 | 2-NAPHTHALENTHIOL |
| refractive index | 1.589-1.591 |
| flash point | 69 °C |
| storage conditions | Inert atmosphere,Room Temperature |
| solubility | diethyl ether: very soluble(lit.) |
| acidity coefficient (pKa) | 6? -. 0.30(Predicted) |
| morphology | Powder |
| color | Almost white to cream |
| water solubility | Soluble in alcohol, dipropylene glycol. Soluble in water 34.4 mg/L @ 25°C. |
| sensitivity | Air Sensitive |
| Merck | 14,6379 |
| JECFA Number | 531 |
| BRN | 636389 |
| NIST chemical information | 2-Naphthalenethiol(91-60-1) |
| EPA chemical information | 2-Naphthalenethiol (91-60-1) |
Last Update：2024-04-10 22:29:15
beta-Naphthyl mercaptan - Security information
| WGK Germany | 3 |
| RTECS number | QK3930000 |
| F | 13 |
| Hazard Note | Harmful/Irritant |
| TSCA | Yes |
| customs code | 29309070 |
Last Update：2024-04-10 22:29:15
beta-Naphthyl mercaptan - Uses and synthesis methods
Toxicity
GRAS(FEMA).
use limited
FEMA: baked goods, meat products, soup products and cereals, all 0.5 mg/kg.
production method
first, 2-naphthol and dimethylaminothioformyl chloride are reacted in the presence of alkali to prepare O-2 naphthyldimethylaminothioformate, which is refined and heated to 270-275 ℃ for 45min. After cooling, add the mixture of potassium hydroxide solution and ethylene glycol, and heat and reflux for 1h. After hydrochloric acid, chloroform extraction, subtractive extraction, and reduced pressure distillation, 2-naphthalene thiophenol is obtained.
Last Update：2024-04-10 22:29:15
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View History
beta-Naphthyl mercaptan
Chrome Green Lake
Acecol
DIAMYL KETONE
METHYL 3-(4-CHLOROSULPHONYL)PHENYLPROPIONATE
Bischloric acid calcium salt
2-Phenylethyl Caprylate
ETHYL HEXADECYL DIMETHYL ETHOSULPHATE [MECETRONIUM ETHOSULPHATE]
Disperse Yellow Se-Fl
Diethyl 1-propanephosphonate
Chrome Green Lake
Acecol
DIAMYL KETONE
METHYL 3-(4-CHLOROSULPHONYL)PHENYLPROPIONATE
Bischloric acid calcium salt
2-Phenylethyl Caprylate
ETHYL HEXADECYL DIMETHYL ETHOSULPHATE [MECETRONIUM ETHOSULPHATE]
Disperse Yellow Se-Fl
Diethyl 1-propanephosphonate
Raw Materials for beta-Naphthyl mercaptan
N,N-Dimethylformamide
Sodium hydride
Potassium hydroxide solution
Ethanethiol
(-)-MENTHYL CHLOROFORMATE
Dimethylthiocarbamoyl chloride
Sodium hydride
Potassium hydroxide solution
Ethanethiol
(-)-MENTHYL CHLOROFORMATE
Dimethylthiocarbamoyl chloride
Downstream Products for beta-Naphthyl mercaptan