70740-21-5 Usage
Chemical Class
Benzotriazole derivative
Molecular Weight
211.24 g/mol
Appearance
White to off-white crystalline solid
Solubility
Soluble in organic solvents like ethanol, methanol, and acetone
Melting Point
105-108°C
Boiling Point
Not readily available, but expected to be high due to its molecular structure
Density
Not readily available, but expected to be higher than water
Uses
UV absorber and stabilizer in plastics, paints, adhesives, and coatings
Function
Protects materials from UV radiation-induced degradation and discoloration
Mechanism
Absorbs and dissipates UV light, preventing it from causing damage to the material
Stability
Stable under normal conditions, but may decompose upon exposure to high temperatures or strong oxidizing agents
Environmental Impact
Generally considered safe, but potential environmental concerns exist due to its widespread use and persistence in the environment
Regulatory Status
Approved for use in various applications by regulatory agencies, such as the FDA and EU REACH
Safety
Non-toxic and non-irritating, but proper handling and storage are recommended to minimize exposure
Storage
Store in a cool, dry, and well-ventilated area, away from strong oxidizing agents and sources of ignition
Packaging
Typically packaged in sealed containers, such as drums or bags, to prevent contamination and exposure to air and moisture
Applications
Widely used in the plastics, coatings, and automotive industries to enhance the durability and appearance of products exposed to sunlight and other sources of UV radiation.
Check Digit Verification of cas no
The CAS Registry Mumber 70740-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,7,4 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70740-21:
(7*7)+(6*0)+(5*7)+(4*4)+(3*0)+(2*2)+(1*1)=105
105 % 10 = 5
So 70740-21-5 is a valid CAS Registry Number.
70740-21-5Relevant academic research and scientific papers
Polycyclic heteroaromatics from reactions of acylbenzotriazoles with aryl isocyanates
Katritzky,Huang,Voronkov,Steel
, p. 8069 - 8073 (2007/10/03)
N-Acylbenzotriazoles react with aryl isocyanates to form, depending on the type of acyl group, compounds based on five different classes of polycyclic heteroaromatics. Higher alkanoyl-, acetyl-, acetoacetyl-, aroyl-, and cinnamoylbenzotriazoles yield, respectively, derivatives of quinoline, pyrimidino[5,4-c]quinoline, benzo[b]-1,8-naphthyridine, phenanthridine, and indolo[2,3-b]quinoline by incorporating 3, 3, 4, 2, and 2 molecules, respectively, of the isocyanate per acylbenzotriazole molecule.
