24308-84-7

Basic information

• Product Name: Zinc benzenesulfinate dihydrate
• Synonyms: BENZENESUIFINIC ACID ZINC SALT;BENZENESULFINIC ACID ZINC SALT DEHYDRATE;BENZENESULFINIC ACID ZINC SALT DIHYDRATE;zincbenzenesulfinate;zincbis(benzenesulfinate);ZINC BENZENESULFINATE DIHYDRATE;ZBS;zinc bis(benzenesulphinate)
• CAS NO: 24308-84-7
• Molecular Formula: 2C₆H₅O₂S*Zn
• Molecular Weight: 383.76
• EINECS: 246-148-1
• Product Categories: Industrial/Fine Chemicals;Organic-metal salt;Pharmaceutical Intermediates
• Mol File: 24308-84-7.mol
• Article Data: 3

Chemical Properties

• Melting Point: 217-221 °C
• Boiling Point: 339.4 °C at 760 mmHg
• Flash Point: 159.1 °C
• Appearance: white powder
• Density: 1.701[at 20℃]
• Vapor Pressure: 3.58E-05mmHg at 25°C
• Water Solubility: 886.9mg/L at 20℃
• CAS DataBase Reference: Zinc benzenesulfinate dihydrate(CAS DataBase Reference)
• NIST Chemistry Reference: Zinc benzenesulfinate dihydrate(24308-84-7)
• EPA Substance Registry System: Zinc benzenesulfinate dihydrate(24308-84-7)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 2
• RTECS: DA9172500
• Hazardous Substances Data: 24308-84-7(Hazardous Substances Data)

Usage

Chemical Properties

Zinc benzenesulfinate dihydrate is white powder

Uses

Zinc benzenesulfinate dihydrate is used for lubricant stuffing, flame retardants and AC foaming agent, Activator could evidently improve product performance. This product non-toxic, do not belong to dangerous goods.

Flammability and Explosibility

Notclassified

InChI:InChI=1/2C6H6O2S.Zn/c2*7-9(8)6-4-2-1-3-5-6;/h2*1-5H,(H,7,8);/q;;+2/p-2

Synthetic route

benzenesulfonyl chloride (98-09-9) + zinc(II) oxide → zinc benzenesulfinate (24308-84-7)

Conditions	Yield
With sodium sulfite In water at 20℃; for 3h; Temperature; Reagent/catalyst; Reflux;	99.8%

benzenesulfonyl chloride (98-09-9) + zinc(II) chloride (7646-85-7) → zinc benzenesulfinate (24308-84-7)

Conditions	Yield
With sodium sulfite In water at 65 - 100℃; for 5h; pH=6 - 7; Reagent/catalyst; Temperature; pH-value;	98.1%

sodium benzenesulfonate (873-55-2) + zinc(II) chloride (7646-85-7) → zinc benzenesulfinate (24308-84-7)

Conditions	Yield
In water at 74℃; for 1.5h; Temperature;	99.4 mol

[(difluoromethyl)thio]methylbenzene (68965-44-6) + zinc benzenesulfinate (24308-84-7) → S-(difluoromethyl) benzenesulfonothioate

Conditions	Yield
Stage #1: [(difluoromethyl)thio]methylbenzene With chlorine In chloroform at -10℃; for 1h; Stage #2: zinc benzenesulfinate In chloroform at -10 - 20℃;	65%

Methyl 3-mercaptopropionate (2935-90-2) + zinc benzenesulfinate (24308-84-7) → methyl 3-phenylthiopropanoate (22198-59-0)

Conditions	Yield
With silver nitrate; palladium dichloride In dimethyl sulfoxide; N,N-dimethyl-formamide at 120℃; for 0.166667h; Microwave irradiation;	62%

diethyl diazodicarboxylate (4143-61-7) + zinc benzenesulfinate (24308-84-7) → diethyl 1-(phenylsulfonyl)hydrazine-1,2-dicarboxylate (57049-53-3)

Conditions	Yield
In dimethyl sulfoxide

Trifluoromethylsulfenyl chloride (421-17-0) + zinc benzenesulfinate (24308-84-7) → S-(trifluoromethyl) benzenesulfonothioate (15398-96-6)

Conditions	Yield
With N,N-dimethyl-formamide In diethyl ether
In diethyl ether byproducts: ZnCl2; 25-31°C;
In diethyl ether byproducts: ZnCl2; 25-31°C;

zinc benzenesulfinate (24308-84-7) → p-tolyl benzenethiosulfonate (17041-81-5)

Conditions	Yield
Multi-step reaction with 2 steps 1: DMF / diethyl ether 2: ethanol View Scheme

zinc benzenesulfinate (24308-84-7) → S-(4-nitrophenyl) benzenesulfonothioate (1150-28-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: DMF / diethyl ether 2: ethanol View Scheme

Upstream product

• 98-09-9 benzenesulfonyl chloride 
• 7646-85-7 zinc(II) chloride 
• 873-55-2 sodium benzenesulfonate 

Downstream Products

• 15398-96-6 S-(trifluoromethyl) benzenesulfonothioate 
• 1150-28-3 S-(4-nitrophenyl) benzenesulfonothioate 
• 17041-81-5 p-tolyl benzenethiosulfonate 
• 57049-53-3 diethyl 1-(phenylsulfonyl)hydrazine-1,2-dicarboxylate 
• 22198-59-0 methyl 3-phenylthiopropanoate 

Relevant articles and documents

Preparation method of zinc benzenesulfinate compound

The invention relates to a preparation method of a zinc benzenesulfinate compound, namely, the zinc benzenesulfinate compound is prepared by mixing and reacting a benzenesulfonyl chloride compound, sodium sulfite, inorganic alkali and zinc salt in water through a one-step method. The method is simple in process, convenient to operate, high in product yield and good in quality; the method can be carried out on conventional equipment, and is a process route suitable for industrial production.

Synthetic method of zinc benzenesulfinate

The invention discloses a synthetic method of zinc benzenesulfinate. The method comprises the following steps: S1, reducing benzenesulfonyl chloride into benzenesulfinate in the presence of an inorganic base by using the benzenesulfonyl chloride as a starting raw material, sodium sulfite as a reducing agent and water as a solvent to obtain a benzenesulfinate aqueous solution; and S2, adding a zincchloride aqueous solution into the benzenesulfinate aqueous solution obtained in the S1, carrying out a reaction, and stopping the reaction; and carrying out cooling, carrying out filtering, carryingout washing by using water and carrying out drying to obtain the target product zinc benzenesulfinate, wherein the reaction temperature in the S2 is 50-90 DEG C, and the reaction time is 60-120 min;and preferably, the reaction temperature in the S2 is 72-75 DEG C, and the reaction time is 80-100 min. The synthetic method provided by the invention has the advantages of simple process steps, no use of organic solvents, no pollution, safety, environmental protection, a high yield, simple operation, raw materials convenient and easy to obtain, and low price; and the method is a synthetic route suitable for large-scale industrial production.