Amines question

A dye can be made from 4-methylphenylamine and 2,6-dimethylphenol, shown below(well they are in my paper, I can't get a picture on here though )

4-methylphenylamine is dissolved in ice-cold hydrochloric acid and sodium nitrite is added. This mixture is then slowly added to an alkaline solution of the phenol to form the dye.

1i) Identify the nitrogen containing compound formed by the mixture of hydrochloric acid and sodium nitrite(I thought initially it would be NaCl, but it says nitrogen-containing, so I'm stuck)

(ii)Draw the structure of the organic compound formed in the ice cold acidic mixture, showing a displayed formula of the nitrogen-containing group.

So my thoughts, would the oxygens on the nitrite substitute off the hydrogens on the amine group?

(iii) state the name of the type of organic compound drawn in (ii) I can't do because I haven't drawn anything

(iv) suggest why the mixture must be kept at a low temperature(is this because you could form something explosive like tnt?)

(v) suggest the structure of the dye

Sorry, there are quite a few parts to this question, but I don't know any of them, please help

i) would be Nitric Acid I think....

Thanks, I'll go with that for the time being any idea's about the other parts?

iv) otherwise the diazonium salt will decompose?

A dye can be made from 4-methylphenylamine and 2,6-dimethylphenol, shown below(well they are in my paper, I can't get a picture on here though )

4-methylphenylamine is dissolved in ice-cold hydrochloric acid and sodium nitrite is added. This mixture is then slowly added to an alkaline solution of the phenol to form the dye.

1i) Identify the nitrogen containing compound formed by the mixture of hydrochloric acid and sodium nitrite(I thought initially it would be NaCl, but it says nitrogen-containing, so I'm stuck)

(ii)Draw the structure of the organic compound formed in the ice cold acidic mixture, showing a displayed formula of the nitrogen-containing group.

So my thoughts, would the oxygens on the nitrite substitute off the hydrogens on the amine group?

(iii) state the name of the type of organic compound drawn in (ii) I can't do because I haven't drawn anything

(iv) suggest why the mixture must be kept at a low temperature(is this because you could form something explosive like tnt?)

(v) suggest the structure of the dye

Sorry, there are quite a few parts to this question, but I don't know any of them, please help

You are going to struggle with this as it's a pretty standard preparation of a azo dye, but unless you read up about it you'll never work out what is happening.

Look up diazotisation and/or reactions of aromatic amines.

The reaction is not difficult to understand but as hinted by others goes via intermediates adn the reagent itself is unstable to heat.