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1978-21-8

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1978-21-8 Usage

Physical State

Colorless liquid

Usage

a. Monomers in the production of polyesters
b. Cross-linking agent in polymeric materials

Polyesters Produced

a. Polyethylene terephthalate (PET)
b. Polybutylene terephthalate (PBT)

Toxicity

Considered toxic

Health Hazards

a. Skin irritation
b. Eye irritation
c. Respiratory system irritation

Safety Measures

Appropriate safety measures should be taken when handling the compound

Check Digit Verification of cas no

The CAS Registry Mumber 1978-21-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,7 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1978-21:
(6*1)+(5*9)+(4*7)+(3*8)+(2*2)+(1*1)=108
108 % 10 = 8
So 1978-21-8 is a valid CAS Registry Number.

1978-21-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name benzene-1,4-dicarbonyl fluoride

1.2 Other means of identification

Product number -
Other names 1,4-benzenedicarbonyl difluoride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1978-21-8 SDS

1978-21-8Relevant articles and documents

Synthesis of Acyl Fluorides from Carboxylic Acids Using NaF-Assisted Deoxofluorination with XtalFluor-E

Gonay, Marie,Batisse, Chloé,Paquin, Jean-Fran?ois

, p. 10253 - 10260 (2020/08/12)

The synthesis of acyl fluorides using the deoxofluorination reaction of carboxylic acids using XtalFluor-E is described. This transformation, assisted by a catalytic amount of NaF, occurs at room temperature in EtOAc, where XtalFluor-E behaves as the activating agent and the fluoride source. A wide range of acyl fluorides were obtained in moderate to excellent yields (36-99%) after a simple filtration on a pad of silica gel. We also demonstrated that sequential deoxofluorination/amidation was possible.

Catalytic Acid Fluoride Synthesis via Carbonylation of Organic Bromides in the Presence Potassium Fluoride

Okano, Tamon,Harada, Nobuyuki,Kiji, Jitsuo

, p. 1741 - 1743 (2007/10/02)

Various aryl bromides were carbonylated under an atmospheric pressure of carbon monoxide in DMF in the presence of potassium fluoride to give aroyl fluorides in excellent yields.The carbonylation was promoted by the addition of phase transfer catalysts, but the contamination with water reduced the selectivity.

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