65294-16-8 Usage
General Description
PERFLUORO(2,5,8-TRIMETHYL-3,6,9-TRIOXADECANOIC) ACID, also known as 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxolane-4-carboxylic acid, is a compound that belongs to the class of perfluorinated carboxylic acids. It is a synthetic chemical that consists of a perfluorinated carbon chain with three oxygen atoms and a carboxylic acid group. PERFLUORO(2,5,8-TRIMETHYL-3,6,9-TRIOXADECANOIC) ACID is commonly used in the production of fluorosurfactants and other fluorinated materials due to its unique properties, such as high thermal stability and water and oil repellency. However, it is also considered an environmental pollutant and a potential health hazard, as it can bioaccumulate in living organisms and persist in the environment. Therefore, its use and disposal are regulated in many countries.
Check Digit Verification of cas no
The CAS Registry Mumber 65294-16-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,2,9 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 65294-16:
(7*6)+(6*5)+(5*2)+(4*9)+(3*4)+(2*1)+(1*6)=138
138 % 10 = 8
So 65294-16-8 is a valid CAS Registry Number.
65294-16-8Relevant articles and documents
Method for preparing perfluoropolyether carboxylic acid
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, (2016/12/22)
The invention discloses a method for preparing perfluoropolyether carboxylic acid. The method comprises the steps that (1) perfluoropolyether Rf-COF is used as raw materials to react with alcohol under the existence of fluoride to produce perfluoropolyether ester; (2) the perfluoropolyether ester reacts with basic salt to produce perfluoropolyether carboxylate; (3) the perfluoropolyether carboxylate reacts with concentrated sulfuric acid, then, distillation is performed to obtain the perfluoropolyether carboxylic acid. Compared with the prior art, the method has the advantages that the generation of a great amount of hydrofluoric acid and fluorinions is avoided; the corrosion on equipment is low; the product yield is high; the water content and the fluorinion content in the product are low.
