Home >> Product >> Biochemicals >> 2,2'-Dithiodipyridine
←Return Back
  • Product Name:   2,2'-Dithiodipyridine
  • Synonyms:   NSC 94055;1,2-Di(pyridin-2-yl)disulfane;Di(pyridin-2-yl) disulphide;Aldrithiol(TM)-2 98%;Bis(pyridin-2-yl) disulfide
  • CAS No.:   2127-03-9
  • Molecular Formula:   C10H8N2S2
  • Molecular Weight :   220.31
  • Specification :   98%
  • Place of Origin:   China
  • Appearance :   
  • Document :   Download

Description of 2,2'-Dithiodipyridine

2,2'-Dithiodipyridine Chemical Properties

Melting point  56-58 °C(lit.)

density  1.3078 (rough estimate)

refractive index  1.5500 (estimate)

Fp  210 °C

storage temp.  2-8°C

solubility  methanol: soluble50mg/mL, clear to very slightly hazy, colorless to faintly brownish-yellow

form  powder

color  Clear colorless to yellow to tan

Water Solubility  5 g/L (20 ºC)

BRN  154629

CAS DataBase Reference 2127-03-9(CAS DataBase Reference)

NIST Chemistry Reference Pyridine, 2,2'-dithiobis-(2127-03-9)

Safety Information

Hazard Codes  Xi,Xn

Risk Statements  36/37/38-37-20/22

Safety Statements  36/37/39-37/39-25-22-36-26


WGK Germany  3


Hazard Note  Irritant


HS Code  29333990

2,2'-Dithiodipyridine Usage And Synthesis

Chemical Properties white to yellowish crystalline powder

Uses 2,2'-Dipyridyldisulfide, sometimes known as DPS, is used for preparing thiols and activating or protecting carboxylic acid with triphenylphosphine.

Purification Methods Recrystallise the disulfide H2O from *C6H6/pet ether (6:7), ligroin or *C6H6. The picrate has m 119o (from EtOH). [Walter et al. Justus Liebigs Ann Chem 695 7785 1966, Marckwald et al. Chem Ber 33 1556 1900, Brocklehurst & Little Biochem J 133 67,78 1973, Beilstein 21 III/IV 48.] It has been used as a 1mM solution in EtOH for the spectrophotometric estimation of thiols. Essentially the thiol displaces half the disulfide molecule liberating the 2-mercaptopyridine anion, thereby shifting the from 340nm (of the disulfide) to 268nm (of the anion) at pH 9, or 278nm in H2O. (Compare

2,2'-Dithiodipyridine Preparation Products And Raw materials

Preparation Products Finasteride

  Please leave your message to us :

    ( Your Information is an important part of our business,and we will not share or sell any of it to anyone.)

Your Name:
Product: 2,2'-Dithiodipyridine


Contact Us

  • Email: info@vosunbio.com
  • Tel:+86-512-66566131,89888618
  • sales extension 8002