Why In News?

The Supreme Court relaxed the blanket ban on firecrackers in Delhi-NCR and allowed limited use of certified green crackers.

What Are Green Firecrackers?

  • Definition: Green firecrackers are fireworks with smaller shells, no ash and additives such as dust suppressants that reduce emissions, especially particulate matter.  

  • Developer: They were developed in 2018 by CSIR’s National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur, following a Supreme Court direction. 

  • Lower, Not Zero, Pollution: They emit about 30–40% less particulate matter than conventional crackers, but they are not pollution-free.

Key Differences From Conventional Crackers

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Feature

Conventional Crackers

Green Crackers

Barium salts

Often used (for green colour)

Not used

Particulate emissions

High

About 30–40% lower

Noise

Around 160 decibels

About 110–125 decibels

Certification

None specific

CSIR-NEERI logo and QR code

What Are The Main Types Of Green Crackers?

Three Approved Variants

  • SWAS (Safe Water Releaser): Releases water vapour that suppresses dust and dilutes harmful gases, cutting emissions by about 30%. 

  • STAR (Safe Thermite Cracker): Uses a reformulated mixture with reduced potassium nitrate and sulphur, lowering gas and noise emissions.  

  • SAFAL (Safe Minimal Aluminium): Uses minimal aluminium and more magnesium, cutting metallic dust. 

Certification

  • Two-Step Approval: CSIR-NEERI certifies the formulation, while the Petroleum and Explosives Safety Organisation (PESO) licenses manufacturers.  

  • Identification: Genuine green crackers carry a green CSIR-NEERI logo and an encrypted QR code that buyers can scan to check authenticity.  

How Firecrackers Pollute?

  • Metal Salts For Colour: Firecrackers use metal salts to produce colours, which release toxic particles when burnt.  

    • Barium gives green, strontium gives red, copper gives blue and sodium gives yellow.

  • Oxidisers And Fuels: Compounds such as potassium nitrate, sulphur and aluminium produce gases like sulphur dioxide and nitrogen oxides, along with fine dust. 

  • Fine Particles: PM2.5 and PM10 from firecrackers enter the lungs and can worsen asthma and heart disease.  

  • Noise: Loud bursts can harm hearing, especially in children, the elderly and animals.

  • Winter Smog: Diwali falls in October–November, when low winds, cold air and stubble burning already trap pollutants over north India. Firecracker emissions add to this load. 

Regulatory Framework On Firecrackers

  • Article 21: The Supreme Court reads the right to life to include the right to a clean environment and clean air.  

  • Key Laws: Firecrackers are regulated under the Explosives Act, 1884, the Environment (Protection) Act, 1986 and the Noise Pollution (Regulation and Control) Rules, 2000. 

Key Court Rulings

  • Arjun Gopal vs Union of India (2018): The Supreme Court banned barium salts in firecrackers and directed the development of green crackers. It allowed bursting only during fixed time slots. 

  • National Green Tribunal (2020): In November 2020, the NGT imposed a near-total ban on firecrackers during the Diwali season in Delhi-NCR and other highly polluted cities.

  • Supreme Court Order (October 2025): The Court allowed the sale and bursting of green crackers in Delhi-NCR from 18 to 21 October 2025. Bursting was limited to 6–7 am and 8–10 pm, only QR-coded, NEERI-certified crackers were allowed, and e-commerce sales were banned. 

What Are The Key Challenges With Green Crackers?

Still Polluting

  • Reduced, Not Removed: Even green crackers emit fine particles and gases. In an already polluted city, a 30% cut may not stop air quality from turning severe.  

Weak Enforcement

  • Fake Green Crackers: Conventional crackers are often sold with fake “green” labels or smuggled in from other States. 

    • Example: While relaxing the ban in October 2025, the Supreme Court observed that crackers smuggled into Delhi-NCR cause more damage than green crackers. It ordered that sellers found with crackers from outside the region would lose their licences.  

  • Poor Compliance: Bans and time limits are often ignored. 

    • Example: In November 2024, after Diwali, the Supreme Court remarked that the firecracker ban had hardly been implemented in Delhi and pulled up the Delhi government.  

Livelihoods And Safety

  • Industry Dependence: Thousands of workers, especially in Sivakasi in Tamil Nadu, the hub of India’s firecracker industry, depend on this sector. Sudden bans hurt their livelihoods. 

  • Factory Accidents: Unsafe working conditions in firecracker units often lead to deadly explosions. 

Way Forward 

Cleaner Celebrations

  • Community Displays: Licensed, community-level fireworks displays can replace scattered private bursting and are easier to regulate.  

    • Example: Singapore banned the private use of firecrackers in 1972 for safety reasons and allows only licensed public displays. Its celebrations continue without widespread private bursting.  

  • Modern Alternatives: Laser shows and drone light shows can offer festive spectacle with almost no air pollution.  

Stronger Regulation

  • Strict Certification: Expand QR-code checks and random testing to stop fake green crackers.  

  • Better Formulations: CSIR-NEERI and industry should keep improving formulations to cut emissions further.  

Protecting Livelihoods

  • Skilling And Transition: Train firecracker workers in safer green manufacturing and offer alternative livelihoods in clusters like Sivakasi.  

  • Link To Clean Air Goals: Firecracker policy should be part of wider clean-air plans such as the National Clean Air Programme (NCAP), which aims to cut particulate pollution in cities by up to 40% by 2025–26.  

Conclusion

Green firecrackers offer a middle path between tradition and clean air, but they reduce pollution rather than remove it. A lasting solution needs strict enforcement, cleaner alternatives such as community and light shows, and fair support for workers in the industry.

Source: THEHINDU

PRACTICE QUESTION

Q. Consider the following pairs:

Metal Salt Used In Fireworks

Colour Produced

1. Barium

Green

2. Strontium

Red

3. Copper

Blue

4. Sodium

Violet

How many of the pairs given above are correctly matched?

(a) Only one

(b) Only two

(c) Only three

(d) All four

Answer: (c)

Explanation:

Barium -> Green: Correct. Barium compounds (such as barium chloride) produce a bright green flame.

Strontium -> Red: Correct. Strontium salts (such as strontium carbonate) produce a vibrant red/crimson flame.

Copper -> Blue: Correct. Copper compounds (such as copper chloride) produce a blue flame.

Sodium -> Violet: Incorrect. Sodium compounds produce a bright golden-yellow color, not violet (potassium or rubidium is typically used for violet/purple flames).