- Difurfuryldisulfide
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- $20.00 / 25kg
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2026-05-21
- CAS:4437-20-1
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 1000mt
- Difurfuryldisulfide
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- $0.00 / 25KG
-
2025-12-01
- CAS:4437-20-1
- Min. Order: 1KG
- Purity: 98.0%
- Supply Ability: 10000KGS
- Difurfuryldisulfide
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- $3.00 / 1KG
-
2025-09-25
- CAS:4437-20-1
- Min. Order: 1KG
- Purity: 98%
- Supply Ability: g-kg-tons, free sample is available
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| | Difurfuryldisulfide Basic information |
| | Difurfuryldisulfide Chemical Properties |
| Melting point | 10-11 °C (lit.) | | Boiling point | 112-115 °C/0.5 mmHg (lit.) | | density | 1.233 g/mL at 25 °C (lit.) | | FEMA | 3146 | 2,2'-(DITHIODIMETHYLENE)-DIFURAN | | refractive index | n20/D 1.585(lit.) | | Fp | >230 °F | | storage temp. | Keep in dark place,Inert atmosphere,2-8°C | | form | clear liquid | | color | Colorless to Yellow | | Specific Gravity | 1.235 (20/4℃) | | Odor | at 0.01 % in propylene glycol. sulfury coffee roasted chicken meaty onion cabbage | | Odor Type | coffee | | biological source | synthetic | | JECFA Number | 1081 | | Major Application | flavors and fragrances | | InChI | 1S/C10H10O2S2/c1-3-9(11-5-1)7-13-14-8-10-4-2-6-12-10/h1-6H,7-8H2 | | InChIKey | CBJPZHSWLMJQRI-UHFFFAOYSA-N | | SMILES | C(SSCc1ccco1)c2ccco2 | | LogP | 4.03 | | CAS DataBase Reference | 4437-20-1(CAS DataBase Reference) | | NIST Chemistry Reference | Bis(2-furfuryl)disulfide(4437-20-1) | | EPA Substance Registry System | Furan, 2,2'-[dithiobis(methylene)]bis- (4437-20-1) |
| Safety Statements | 24/25 | | RIDADR | UN 3334 | | WGK Germany | 3 | | TSCA | TSCA listed | | HS Code | 29321900 | | Storage Class | 10 - Combustible liquids |
| | Difurfuryldisulfide Usage And Synthesis |
| Chemical Properties | Pale yellowish oily liquid. Slightly soluble in water, soluble in alcohol and oils.
| | Occurrence | Reported found in beef (boiled, cooked) and coffee | | Uses | Furfuryl disulfide has been used in the preparation of poly(disulfido-imide)s by Diels-Alder (DA) reaction with the various bismaleimides. | | Definition | ChEBI: Bis(2-furanylmethyl) disulfide is a heteroarene. | | Preparation | Difurfuryl disulfide is produced from Furfural and Hydrogen sulfide gas. | | Taste threshold values | Taste characteristics at 20 ppm: roasted, sulfuraceous, alliaceous, green and meaty. | | General Description | Difurfuryl disulfide is a sulfur-containing volatile compound mainly found in roasted coffee. It is also the main degradation product of furfuryl mercaptan under Fenton-type reaction conditions. | | Synthesis | The general procedure for the synthesis of difurfuryldisulfide from furfuryl(base)thiols was as follows: a non-homogeneous mixture of 4-chlorobenzenethiol (0.145 g, 1 mmol) with KBrO3 (0.167 g, 1 mmol), (NH4)6Mo7O24-4H2O (0.124 g, 10 mmol), and CH3CN/H2O (7:3, 5 mL) was mixed. The reaction mixture was stirred in a fume hood for 4 min under ambient atmosphere and at room temperature. The reaction progress was monitored by thin layer chromatography (TLC) using EtOAc/n-C6H14 (1:13) as eluent. Upon completion of the reaction, CH2Cl2 (20 mL) was added and the reaction mixture was filtered. The filtrate was washed sequentially with 5% NaOH solution and water and then dried with anhydrous MgSO4. Finally, the difurfuryldisulfide product of sufficient purity was obtained by evaporating the solvent. | | References | [1] Bulletin of the Chemical Society of Japan, 1996, vol. 69, # 3, p. 685 - 691
[2] Synthesis, 2007, # 21, p. 3286 - 3289
[3] Journal of Chemical Research - Part S, 2002, # 11, p. 564 - 566
[4] Synthetic Communications, 2011, vol. 41, # 2, p. 170 - 176
[5] Journal of Organic Chemistry, 1995, vol. 60, # 11, p. 3266 - 3267 |
| | Difurfuryldisulfide Preparation Products And Raw materials |
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