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DEP or direct etching, plastic, astrafoil ink was manufactured from the benzidine based azo dye "Direct Black 38" in an aniline liquid carrier. Other colored Azo dyes were also used. It was withdrawn and banned in the United States of America during the early 1960's due to health concerns and its relation to bladder cancer in draftmen using it.
Investigation during the 1980's of human exposure to the dye demonstrated certain metabolites were formed within 7 days after exposure which were isolated and identified by gas chromatography-mass spectrometry as:
benzidine, 4-aminobiphenyl, monoacetylbenzidine, and acetylaminobiphenyl. Formation of the deaminated and N-acetylated analogs of benzidine, which have enhanced mutagenicity and lipophilicity effect on the large intestine and could, in some cases, be related to the onset of bowel cancer in later life.
What else can I help you with?
What is the percent composition by mass of SO2?
Being friends
How the moon like earth at night?
Apart from the moon being an astronomical body it is very unlike the earth.
How were the missions connected and how far apart were they?
The missions were connected by systems of Spanish colonial settlements along El Camino Real, a road that linked the missions in California. The distance between the missions varied, with some being around 30 miles apart and others further apart, depending on the geographical location and terrain.
How far are pegs apart in quoits?
In a game of quoits, the pegs are typically set 18-21 feet apart. The exact distance may vary depending on the specific rules or regulations being followed.
Which American state is being torn apart from the rest of north America by the pacific plate?
California is being torn apart from the rest of North America by the Pacific Plate along the San Andreas Fault. This movement is causing a gradual widening of the gap between the North American Plate and the Pacific Plate.
Can aniline souble in acetic acid?
Both being two polar compounds, aniline is highly soluble in acetic acid.
Why the litmus aniline is neutral?
Litmus is a weak acid that is primarily present in the form of its conjugate base at neutral pH, leading to its neutral color. Aniline, being a weak base, does not significantly affect the pH of the litmus solution, allowing it to remain neutral.
Why aniline doesn't under go friedal craft reaction?
Aniline doesnt undergo friedel craft rxn because the reagent AlCl3,(the lewis acid which is used as a catalyst in friedel crafts reaction).being e- deficient acts as lewis base and attacks on the lone pair of nitrogen present in aniline & aniline forms a salt with Aluminium chloride. Due to this nitrogen atom of aniline acquires a positive charge and hence acts as a strong deactivating group and thus doesn 't allow the reaction to take place.In other cases ther is no such reaction.
Which is more basic cyclohexyl aniline or aniline?
Strength of bases is related to the ease of accepting a proton which inturn depends on the availability of electron pair on the nitrogen atom (or some other basic atom). More is the availability of electron pair, more easily the proton will be accepted and more will be the basic strength.Aniline is a weaker base than ammonia or cyclohexylamine. It is because of the fact that the electron pair on nitrogen is involved in delocalization, making it less available for donation.
What is the percent of the earth being covered in water?
about 73 percent
What resists being pulled apart?
Sometimes condoms
Why is Elizabeth famous?
You mean apart from being the Queen?
How do you get out of being apart of moshi monsters?
Stop playing.
What is apartness?
Apartness is the state or quality of being apart.
Will my cat remember me after 5 years of being apart?
Yes, cats have good long-term memories and can remember their owners even after being apart for several years.
Why is Elizabeth II famous?
You mean apart from being the Queen?
How many miles apart are stranrear and carlisle?
i am being gay
