IMPORTANT DELIVERY INFORMATION - PLEASE READ
Free UK Shipping

For Orders Over £249

Satisfaction 100% Guaranteed

Only the best Fireworks & Service

Fast Reliable Delivery

Order now for bonfire night

4.9/5 Star Client Ratings

With Over 2150+ Reviews

Tel / Whatsapp

01245 354422

Join us

Sign in | Register

Logged in

My Account

How do Fireworks Get Their Colour?

We all love fireworks and they bring a lot of enjoyment to parties from birthdays to weddings. While the bursts of colour and the dazzling effects are often over in seconds, the craft that has gone into creating all that has taken quite a bit of chemistry.

file0001398207570
 
So, if you’ve ever wondered how the colours are created, this guide will hopefully answer all of your questions.

All About Chemistry

The quick explanation behind firework colours is all about chemistry and how it is used when fireworks are built. As well as having a cartridge full of gunpowder to create the blasts, fireworks also have small pockets filled with different chemicals.
The chemicals in these little pockets are mainly metal salts and metal oxides, which cause the reaction to produce a mix of colours for our enjoyment. These pockets of chemicals are spread around the firework to provide the different colours and the heating gunpowder releases the chemicals into the air.
The atoms in these oxides and salts get heated by the gunpowder, which causes the electrons to rearrange. The rearrangement makes these electrons go from high-energy state back to low-energy state, during which the excess energy produced will emit light.

How Light Waves Work

You might know that light travels in waves. Exploiting the differences in the wavelength creates the differences in colour. The different chemicals used in fireworks are chosen based on the kind of wavelength the released energy produces.
Metal salts and oxides with shorter wavelengths, around 400 to 500 nanometres, are used to produce different shades of blue. The salts and oxides with longer wavelengths, around 600 to 700 nanometres, create the bursts of red and orange colours. Finally, the wavelengths that fall between this, 500 to 600 nanometres, produce yellows and greens.

Specific Compounds Behind the Colours

The chemical composition is naturally different for each colour. You’ll need quite a number of different oxides and salts in order to create the different colours. As you might have read from our previous post on the history of fireworks, the plethora of colours in fireworks has been quite a recent invention.
Here are the compounds used in fireworks to create certain colours:

  • Red – strontium for dark, bright reds and lithium for dimmer reds
  • Orange – calcium
  • Yellow – sodium
  • Green – barium together with chlorine producer
  • Blue – copper together with chlorine producer
  • Purple – strontium together with copper compounds
  • Gold – charcoal, iron and lampblack
  • White/silver – titanium, aluminium, magnesium and beryllium

Naturally by mixing and matching these chemicals, you can create all sorts of variations of the colours. By using chemicals, manufacturers are also able to add special effects and enhance the colours. For example, by adding antimony to the fireworks, manufacturers can create the glittery effect. In addition, a hint of calcium and the colour is deepened, while phosphorous adds the glow-in-the-dark effect to fireworks.
The exciting thing is that firework manufacturers are constantly researching new chemical compositions to come up with all sorts of stunning colours and effects. It will be interesting to see how the science behind fireworks develops and what sorts of amazing creations will we be able to see in the years to come!

Share this post
Share on facebook
Share on twitter
Share on whatsapp
Share on email
Share on pinterest

Leave a Comment

Scroll to Top

Delivery Information

Next Day

 – You will receive your order the following working day from day of despatch (not including Saturday/Sunday). We endeavour to dispatch all orders placed before 12pm the same day although this is not always possible in our busy season, October – December. If you require your order by a certain date enter this in the “order notes” section on the next page. All dates are treated as the latest date for delivery NOT the date you would like delivery.


Hold For Later Delivery

– This option is for those who would like us to hold on to their order and deliver it nearer to the date of their display. You should enter this date in the “order notes” section on the next page.


Collect from Chelmsford Store

– Select this option if you would like to collect your order. Enter the date you would like to collect and AM/PM in the “order notes” section on the next page. Collection is not available on SATURDAY 2nd NOVEMBER 2019. You will be required to bring the card you used to pay with and photo ID before you can collect your order. THESE MUST MATCH.


Add to Existing Order

 – If you already have an order with us and would like to add to it before it is shipped, select this option then enter your existing order number in the “order notes” section on the next page.


Saturday Delivery

 – Enter the date you would like your order delivered in the “order notes” section on the next page. If this is blank your order will be delivered on the next Saturday after the day of ordering. PLEASE NOTE it is not possible to deliver orders on the Saturday either side of Bonfire Night, Christmas or New Year


AM DELIVERY

 – Your order will be delivered before midday the day after it has been dispatched (excluding Saturday / Sunday)


Before 10:30 am

 – Your order will be delivered before 10:30am the day after it has been dispatched (excluding Saturday / Sunday).