Why is azodicarbonamide called the yoga mat chemical?

Because the same compound is used industrially as a foaming agent to put bubbles into rubber and foamed plastics, including shoe soles and exercise mats. It is the same chemical, but the amount used in bread is tiny and tightly capped in the US at 45 parts per million of the flour. The nickname is memorable but it is not the reason regulators are looking at it — the actual questions are about what it breaks down into during baking, and about workers who inhale the raw powder.

Is azodicarbonamide allowed in India?

No. Azodicarbonamide is not on FSSAI's list of permitted food additives, which means Indian manufacturers cannot legally add it. It was confirmed in Parliament that FSSAI has not approved it. It can still turn up on imported bakery products made under US rules, which is where reading the actual printed label matters.

What does azodicarbonamide break down into?

During baking it breaks down, and two of the breakdown chemicals are semicarbazide and ethyl carbamate (also called urethane). The FDA's 2016 exposure assessment found semicarbazide levels in US bread far below the doses that produced tumours in female mice. Ethyl carbamate is classified by the WHO's cancer agency, IARC, as probably carcinogenic to humans (Group 2A), though it also forms naturally in fermented foods and drinks. In May 2026 the FDA specifically asked industry for new data on both breakdown products.

How do I avoid azodicarbonamide?

Check the ingredients list for azodicarbonamide, ADA, ADCA, E927a or INS 927a. It is most likely on US-made or US-standard bread, buns, rolls, pizza bases, bagels and wraps. The FDA itself states that azodicarbonamide is not necessary to make bread and that approved alternatives exist, so plenty of brands simply do not use it. LabelCop flags it automatically on any label you photograph.

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Is azodicarbonamide (E927a) safe?

Q: Is azodicarbonamide banned?

It depends what you mean. Azodicarbonamide is not on the permitted food additive list in the EU, UK, India, Australia, New Zealand or Singapore — so it cannot legally be added to food there. That is different from a named regulator issuing a specific ban. The one clearly documented EU prohibition is narrower: the EU banned azodicarbonamide as a blowing agent in the plastic gaskets used to seal food jars and bottles, from 2005. In the United States it remains authorised in cereal flour and bread dough at up to 45 parts per million under 21 CFR 172.806.

By LabelCop · Last updated 20 August 2026 · Sources: FDA, EFSA, FSSAI, WHO/IPCS, IARC, ECHA

The short answer: almost nowhere permits it in food — except the US, and the FDA reopened the file in May 2026.

US: permitted in flour and bread dough, capped at 45 ppm
EU, UK, India, Australia, NZ, Singapore: not on the permitted food additive list
FDA (May 2026): opened a post-market safety assessment and asked for new data on its breakdown products
LabelCop: high-risk flag — strictest regulator wins

What is azodicarbonamide?

A synthetic flour treatment agent — it ages and whitens flour and strengthens dough
Industrially, the same compound is a foaming agent for rubber and foamed plastics (hence the "yoga mat chemical" nickname)
It does not survive baking — it breaks down into other chemicals in the oven
Label names: azodicarbonamide, ADA, ADCA, E927a, INS 927a

Which foods contain it?

US-standard bread, burger buns, hot dog rolls and sandwich loaves
Bagels, pizza bases, tortillas and wraps
Packaged flour sold to bakeries (listed as an optional ingredient in the US standards for flour and whole wheat flour)
Also authorised in the US as an indirect additive — in sealing gaskets for jar and bottle closures

In India: it is not permitted, so Indian-made bread should not contain it — but it can appear on imported US bakery goods, which is exactly where reading the printed label beats looking up a barcode

What the regulators actually say

Regulator	Status	Reasoning
FDA (United States)	Permitted, under review	Authorised as an aging and bleaching ingredient in cereal flour and a dough conditioner in bread baking, capped at 0.0045% — 45 parts per million of the flour (21 CFR 172.806). On 13 May 2026 the FDA published a request for information and opened a post-market assessment of ADA in food and food contact materials, asking specifically for data on its decomposition products. Comments closed 13 July 2026.
European Union / EFSA	Not permitted in food	Azodicarbonamide is not on the EU's list of authorised food additives under Regulation (EC) No 1333/2008, so it cannot be added to food. Separately, the EU did prohibit its use as a blowing agent in plastic food-contact materials from 2005, after semicarbazide was found in food packed in glass jars — a decision EFSA assessed at the time.
FSSAI (India)	Not on the permitted list	Azodicarbonamide has not been approved by FSSAI as a food additive — confirmed in a reply to Parliament. It is absent from the permitted additive schedules, so Indian manufacturers cannot legally use it.
UK, Australia, New Zealand, Singapore	Not on the permitted list	None of these regulators list azodicarbonamide as a permitted food additive. Note the distinction: an additive can be absent from a permitted list without a named regulator ever issuing a specific ban — we say "not permitted", not "banned", unless we can point at the instrument.
WHO / IPCS	Flagged as an occupational asthmagen	The WHO's International Programme on Chemical Safety concluded in 1999 that the key human health effect of azodicarbonamide is asthmagenicity — in workers who inhale the raw dust during manufacturing and handling. This is a workplace finding about breathing the powder, not a finding about eating baked bread.
ECHA (EU chemicals agency)	Substance of Very High Concern (2012)	Added to the REACH candidate list in 2012 for respiratory sensitising properties, and classified H334 — "may cause allergy or asthma symptoms or breathing difficulties if inhaled". Again, an industrial-exposure classification.

Why do regulators disagree?

Two different questions get mixed up. One is about workers inhaling the powder. The other is about eating the traces left in baked bread
The workplace question is settled: the WHO, ECHA and the UK HSE all treat it as a respiratory sensitiser. Nobody argues
The dietary question turns on breakdown products. Baking converts ADA into other chemicals, including semicarbazide and ethyl carbamate
FDA's position: its 2016 exposure assessment measured semicarbazide in over 250 US bread products and found intakes far below the doses that raised tumour rates in female mice. It has not recommended dietary changes
The counterpoint: IARC classifies ethyl carbamate as probably carcinogenic to humans (Group 2A) — though it also forms naturally during fermentation, so bread is not the only source
The EU took the other route: it never authorised ADA for food, and cut the packaging exposure route in 2005 rather than quantify it
What changed in 2026: the FDA is no longer treating the 2016 assessment as final — it has asked manufacturers for fresh use levels and residue data on both breakdown products. "Under review" is not "banned", but it is a real shift

The line the FDA itself draws

The FDA states plainly that azodicarbonamide is not necessary to make bread, and that approved alternatives exist
That matters: this is a processing convenience, not a nutrient and not a safety preservative
Many major bakers dropped it years ago after consumer campaigns — so its presence is a brand choice, not an industry necessity
Which is why we think it belongs on a label check even at legal levels

How LabelCop scores it

Azodicarbonamide is a high-risk flag in LabelCop
Rule: strictest regulator wins — most major regulators do not permit it in food at all, so we flag it even where it is legal
Why we flag it, in our own words: it breaks down during baking into semicarbazide and ethyl carbamate, substances of concern, and it is a recognised cause of occupational asthma in workers who breathe in the dust
The product's score takes a penalty — and you see the flag, the reason and the sources. No black box

Frequently asked questions

Is azodicarbonamide banned?

Depends what you mean. It is not on the permitted food additive list in the EU, UK, India, Australia, New Zealand or Singapore, so it cannot legally be added to food there. That is not the same as a named regulator issuing a specific ban. The clearly documented EU prohibition is narrower — the EU banned it as a blowing agent in the plastic gaskets sealing food jars and bottles, from 2005. In the US it stays authorised at up to 45 ppm.

Why is it called the "yoga mat chemical"?

The same compound foams rubber and plastic, including shoe soles and exercise mats. Same chemical, very different quantity — bread use is capped at 45 parts per million of the flour in the US. The nickname is catchy, but the real regulatory questions are about baking breakdown products and about workers inhaling the raw powder.

Is it allowed in India?

No. FSSAI has not approved azodicarbonamide as a food additive, so Indian manufacturers cannot use it. It can still appear on imported bakery products made to US standards — check the printed ingredients list on the pack.

What does it turn into during baking?

Chiefly biurea, plus smaller amounts of semicarbazide and ethyl carbamate. The FDA's 2016 assessment put semicarbazide intake from US bread far below the levels that produced tumours in female mice. IARC classifies ethyl carbamate as probably carcinogenic to humans (Group 2A), but it also forms naturally in fermented foods. The FDA asked for new data on both in May 2026.

How do I avoid it?

Look for azodicarbonamide, ADA, ADCA, E927a or INS 927a — most likely on US-made or US-standard bread, buns, bagels, wraps and pizza bases. The FDA says it is not needed to make bread, so many brands skip it. Or scan the label with LabelCop and it is flagged automatically, with the regulator reasoning shown.

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Sources

21 CFR 172.806 — FDA authorisation and 45 ppm limit · FDA (13 May 2026): Azodicarbonamide — Request for Information, Docket FDA-2026-N-4126 · FDA: Azodicarbonamide frequently asked questions · EFSA: further evaluation of semicarbazide in food · Regulation (EC) No 1333/2008 — EU list of authorised food additives · WHO/IPCS (1999): Concise International Chemical Assessment Document 16 — Azodicarbonamide · IARC: classification of ethyl carbamate (Group 2A) · ECHA: REACH candidate list of substances of very high concern · FSSAI: Food Safety and Standards regulations — permitted additives

Related ingredients: Potassium bromate (E924) · TBHQ (E319) · BHA & BHT (E320/E321)

This article explains regulatory status and published scientific assessments in plain English. It is not medical advice.