7539-28-8 Usage
Explanation
The molecular formula represents the number of atoms of each element present in a molecule of the compound.
Explanation
This is an alternative name for the compound, which is used in the textile and leather industries as a dye.
Explanation
Aromatic amines are a group of organic compounds that contain an amine group (-NH2) attached to an aromatic ring.
Explanation
The compound has two nitrophenyl groups (C6H4NO2) attached to the central benzene ring through methylene bridges (-CH2-).
Explanation
The compound is known for its bright yellow color, which makes it suitable for use as a colorant in various applications.
Explanation
Due to its bright yellow color, the compound is used as a dye in the textile and leather industries, as well as in the production of inks, plastics, and paints.
Explanation
The compound poses a health risk if it is swallowed or inhaled, and it is important to handle it with care.
Explanation
The compound may cause irritation to the skin and eyes upon contact, so proper protective measures should be taken when handling it.
Chemical family
Aromatic amines
Structural feature
Contains two nitrophenyl groups
Color
Bright yellow
Applications
Textile and leather industries, inks, plastics, and paints
Toxicity
Can be toxic if ingested or inhaled
Irritation
Can cause skin and eye irritation
Check Digit Verification of cas no
The CAS Registry Mumber 7539-28-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,3 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7539-28:
(6*7)+(5*5)+(4*3)+(3*9)+(2*2)+(1*8)=118
118 % 10 = 8
So 7539-28-8 is a valid CAS Registry Number.
7539-28-8Relevant academic research and scientific papers
Photochromism in N,N'-Di(o-nitrobenzylidene)diamines
Rawat, M. S. M.
, p. 238 - 242 (2007/10/02)
Dianils of o-nitrobenzaldehyde with p,p'-phenylenediamine, 4,4'-diaminodiphenyl ether, 4,4'-diaminodiphenylmethane and benzidine have been prepared and their photochromic behaviour has been investigated in solid state, solution and rigid glassy solvents at low temperatures.There is a change in colour on irradiation by UV or sunlight in the solid state which thermally reverses into the original colour in the dark.However, on prolonged irradiation, the colour changes permanently and can not be reversed on heating.Irreversible changes have been observed when the solutions of these compounds are irradiated (365 nm).The IR and mass spectra of the irradiated samples lead to the conclusion that the permanent change in the compounds after irradiation is due to the transformation of o-nitrobenzylidene form to o-nitrosobenzanilide form.On irradiating (365 nm) the PMMA films of the dianils at -180 deg C (liquid air temperature), a characteristic concomitant band appears at 465-470 nm with the absorption band at 355 nm undergoing hypsochromic shift as well hypochromic shift.This is attributed to the formation of quinonoid form with simultaneous degradation of the compounds.
