131221-36-8 Usage
Physical state
Colorless, non-flammable gas
Odor
Faint ether-like odor
Uses
a. Refrigerant
b. Solvent
c. Propellant in aerosol cans
Applications
Cleaning and degreasing metal, electronic, and precision equipment
Ozone-depleting potential
High (phased out under the Montreal Protocol)
Greenhouse gas
Yes, contributes to global warming
Atmospheric persistence
Can persist for several decades
Production status
Largely phased out due to environmental concerns
Check Digit Verification of cas no
The CAS Registry Mumber 131221-36-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,2 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131221-36:
(8*1)+(7*3)+(6*1)+(5*2)+(4*2)+(3*1)+(2*3)+(1*6)=68
68 % 10 = 8
So 131221-36-8 is a valid CAS Registry Number.
131221-36-8Relevant articles and documents
19F nuclear magnetic resonance studies of halogenated propanes
Tanuma, T.,Ohnishi, K.,Okamoto, H.,Miyajima, T.,Morikawa, S.
, p. 259 - 284 (2007/10/02)
The relationship between 19F chemical shifts in halogenated propanes and their structures are elucidated using MNDO calculations to determine the population of rotamers.The pairs of atom gauche to a fluorine atom and van der Waals interaction between the two terminal substituents are responsible for the 19F chemical shifts.The differences among chemical shifts in diastereomers are also discussed in terms of the conformation of molecule.
