Nitrogen
7727-37-9 · ASTM D4629 Calibration Set, N @ 0-100 mg/L in Isooctane · Azote [French] · Diatomic nitrogen · Diazyne · Dinitrogen · HSDB 5060 · INS NO.941 · INS-941 · Liquid Nitrogen · MOL Nitrogen · Molecular nitrogen · N in Stainless steel · N in Steel · Nitrogen · Nitrogen (JP18/NF) · Nitrogen (liquified) · Nitrogen (n2) · Nitrogen C70f6047-a0cb-4f70-aa3a-78acd681efc3 · Nitrogen Calibration Set: 0-100 mg/L in Isooctane · Nitrogen Check Standard: N @ 1 ppm in Isooctane · Nitrogen Check Standard: N @ 10 ppm in Isooctane · Nitrogen Check Standard: N @ 50 ppm in Isooctane · Nitrogen Check Standard: N @ 50 ppm in Toluene · Nitrogen Compressed · NITROGEN Compressed, NF · Nitrogen gas · nitrogen molecule · Nitrogen Nf · Nitrogen Set for ASTM D6366: N @ 10, 25, 50, 75, 100 ng/microL in Isooctane · Nitrogen Standard 0.1% W/W · Nitrogen, >=99.998% · Nitrogen, >=99.999% · Nitrogen, elemental · Nitrogen, liquid · Nitrogen, Messer(R) CANGas, 99.999% · Nitrogen, Refrigerated · Nitrogen, refrigerated liquid (cryogenic liquid) · Nitrogen-14 · Nitrogeno · STEEL, N · E941 · 941 · Nitrogen Set for ASTM D6366: N @ Blank, 0.1, 0.5, 1.0, 2.5, 5.0, 10 ng/microL in p-Xylene · Nitrogen · Azot · Azotas · Azote · Azoto · Dusík · Kväve · Lämmastik · Nitrogen · Nitroġenu · Nitrógeno · Slāpeklis · Stickstoff · Stikstof · Typpi · Άζωτο · АзотE number E941INS 941CAS 7727-37-9
Listed as a propellant by Canada, Codex and the US.
Listed as propellants and aerating agents (CA, US, Codex) · antioxidants (US) · foaming and whipping agents (Codex) · packaging gases (Codex) · formulation aids (US)
- Canada: Pressure dispensing agent — Health Canada, List of Permitted Food Additives with Other Purposes of Use (List 8)
- United States: Propellant — FDA, Substances Added to Food: NITROGEN
- United States: Propellants, aerating agents, and gases — 21 CFR 184.1540, citing 21 CFR 170.3(o)(25)
- Codex Alimentarius: Propellant — CXS 192-1995 Table One, INS 941
- United States: Antioxidant — FDA, Substances Added to Food: NITROGEN
- Codex Alimentarius: Foaming agent — CXS 192-1995 Table One, INS 941
- Codex Alimentarius: Packaging gas — CXS 192-1995 Table One, INS 941
- United States: Formulation aid — FDA, Substances Added to Food: NITROGEN

Nitrogen is the workhorse packaging gas. It flushes oxygen out of bags and bottles so fats do not go rancid, and it is what makes a crisp packet firm.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| Australia and New Zealand | Permitted, with conditions | 55 food categories no numerical limit (good manufacturing practice) Show every food category
| Food Standards Code, Schedule 15, S15—5and 54 further provisionsretrieved 2026-10-17 |
| Canada | Permitted | no numerical limit (good manufacturing practice) 3 permitted uses Show every permitted use
| Health Canada, List of Permitted Food Additives with Other Purposes of Use (List 8)and 2 further provisionsretrieved 2026-10-17 |
| European Union | Permitted, with conditions | 68 food categories Show every food category
| Regulation (EC) No 1333/2008, Annex IIand 67 further provisionsretrieved 2026-10-18 |
| Great Britain | Permitted, with conditions | 67 food categories Show every food category
| Assimilated Regulation (EC) No 1333/2008and 66 further provisionsretrieved 2026-10-18 |
| Japan | No listing matchedThis site imports only Japan’s list of designated additives (Appended Table 1 to the Regulations for Enforcement of the Food Sanitation Act), matched by English name. Existing additives, natural flavouring agents and ordinary foods used as additives are permitted outside that list and are not imported, so an empty row does not show that Japan does not permit the substance. | ||
| South Korea | Permitted, with conditions | Designated food additive: Standards and Specifications for Food Additives, Part III, 1. …Designated food additive: Standards and Specifications for Food Additives, Part III, 1. 일반식품첨가물 (general food additives), 질소 (“Nitrogen”, the English the Code prints beside it); the Code marks it as also usable as a processing aid; 2. 가공보조제 (processing aids), 질소 (“Nitrogen”, the English the Code prints beside it); the Code marks it as also usable as a general food additive. Main use (주용도) of 질소: 분사제, 충전제. Standard for use (사용기준) of 질소: (1) [to be used under the general standard for use in II. 2. 1), the minimum amount that achieves the technical effect, with no limit set for this additive in particular; and a further sentence this site does not describe] “II. 2. 1)의 규정에 따라 사용하여야 한다. 다만, 액체로서 사용하는 경우, 최종식품에 액체가 잔류하여서는 아니 된다.” Main use (주용도) of 질소: 제조용제. The Korean is the standard as published. There is no official English translation of the current Code (the English version on MFDS’s website is the 2020 edition and has no legal effect); the English in square brackets is this site’s description of what each sentence does, not a translation of the foods or the levels. Compositional specifications (Part IV) are not imported, nor are the general standards in Part II, which apply to every additive. | Standards and Specifications for Food Additives (식품첨가물의 기준 및 규격), MFDS Notification, Part III (Standards for use, by item)retrieved 2026-10-18 |
| United States | Permitted | 21 CFR 184.1540retrieved 2026-10-17 | |
| Codex Alimentarius | Permitted, with conditions | 13 food categories no numerical limit (good manufacturing practice) Show every food category and its notes
| CXS 192-1995 Table Three, INS 941and 13 further provisionsretrieved 2026-09-07 |
How much is permitted
A listing usually limits the quantity as well as the food. Only one of the forms that takes is a figure: quantum satis and good manufacturing practice permit the amount the technological effect requires and no more, which is a limit rather than the absence of one. Figures below are the range across every food category this page is listed in, and categories differ between regulators — see how much is permitted.
| Australia and New Zealand | — | 55 GMP |
|---|---|---|
| Canada | — | 3 GMP |
| European Union | — | 46 several limits, 22 no quantity stated |
| Great Britain | — | 67 quantum satis |
| South Korea | — | 1 no quantity stated |
| United States | — | 1 no quantity stated |
| Codex Alimentarius | — | 14 GMP |
No regulator sets a figure for Nitrogen. That is not an absence of control: where the listing says quantum satis or good manufacturing practice, the quantity is limited to what the effect requires.
What a label must say
Words a food containing Nitrogen is obliged to carry, quoted from the instrument that imposes them. A required statement is a fact about the regulation, not a finding about the substance — every rule below applies where the additive is authorised.
‘packaged in a protective atmosphere’.
A food whose durability has been extended using an authorised packaging gas. Regulation (EU) No 1169/2011, Annex III, point 1.1 · Assimilated Regulation (EU) No 1169/2011, Annex III
Every rule collected at what a label must say.
What it is made from
Separated from air by distillation or membrane separation. Air is roughly four-fifths nitrogen, so the raw material is free.
- Vegan
- Vegetarian
Compare other additives on the dietary indexes.
- CAS registry number
- 7727-37-9
- InChIKey
- IJGRMHOSHXDMSA-UHFFFAOYSA-N
- PubChem
- CID 947
The two specifications, compared
The European Union sets identity and purity by regulation; JECFA publishes its own through FAO, advisory until a country adopts it. Both documents are below in full. These are the parameters each puts a number on.
| Parameter | European Union | JECFA |
|---|---|---|
| Assay | no less than 99 % | no less than 99 % |
The two documents state the same figures for every parameter compared here.
How the EU defines it
The legal specification an additive must meet to be sold as this E number in the EU — what it is, how it may be made, and the purity it must reach. From Commission Regulation (EU) No 231/2012.
E 941 Nitrogen
Assay, identification and purity criteria
Description and assay
- Einecs
- 231-783-9
- Chemical name
- Nitrogen
- Chemical formula
- N₂
- Molecular weight
- 28
- Assay
- Not less than 99 %
- Description
- Colourless, odourless, non-flammable gas
Purity criteria
- Water content
- Not more than 0,05 %
- Carbon monoxide
- Not more than 10 μl/l
- Methane and other hydrocarbons
- Not more than 100 μl/l (calculated as methane)
- Nitrogen dioxide and nitrogen oxide
- Not more than 10 μl/l
- Oxygen
- Not more than 1 %
How JECFA defines it
The international specification for identity and purity, prepared by the Joint FAO/WHO Expert Committee on Food Additives and published by FAO. It is a different document from any above, written by a different body and revised on its own cycle; it is advisory, and a country adopts it or does not.
INS 941 Nitrogen
This monograph defines nitrogen with a maximum oxygen content of 1%, which is suitable only for some food applications. There are food applications that require a higher purity (i.e., lower oxygen content).
Synonyms: INS No. 941
Assay, identification and purity criteria
Description and assay
- Specification history
- Prepared at the 53rd JECFA (1999) and published in FNP 52 Add 7 (1999), superseding specifications prepared at the 51st JECFA (1998), published in FNP 52 Add 6 (1998). ADI "No ADI necessary" established at the 24th JECFA in 1980.
- Chemical names
- Nitrogen
- C.A.S. number
- 7727-37-9
- Chemical formula
- N 2
- Formula weight
- 28.0
- Assay
- Not less than 99.0% v/v
- DESCRIPTION
- Colourless, odourless gas or liquid
- FUNCTIONAL USES
- Freezing agent, propellant, packaging gas
- METHOD OF ASSAY
- Determine by Gas chromatography using the following conditions: Column: - material: stainless steel - length: 2 m internal diameter: 2 mm packing material: appropriate molecular sieve capable of absorbing molecules with diameters up to 0.5 nm. Carrier: - gas: helium (not less than 99.995 % (v/v) of He) - flow: 40 ml/min Detector: thermal conductivity detector Injector: loop injector Column temperature: 50° Detector temperature: 130° Reference gas (a): ambient air Reference gas (b): Nitrogen (not less than 99.999 % (v/v) of N 2 , less than 1 ppm CO, less than 5 ppm O 2 ) Procedure: Inject reference gas (a). Adjust the injected volumes and operating conditions so that the height of the peak due to nitrogen in the chromatogram is at least 35 % of full scale of the recorder. The assay is not valid unless the chromatograms obtained show a clear separation of oxygen and nitrogen. Inject the gas to be examined and the reference gas (b). In the chromatogram obtained with the gas to be examined, the area of the principal peak is at least 99.0 % of the area of the principal peak in the chromatogram obtained with reference gas (b).
Identification
- Flame test
- A flame is extinguished in an atmosphere of the sample
Purity criteria
- Oxygen
- As declared by the vendor but not more than 1% v/v See description under TESTS
- Carbon monoxide
- Not more than 10 μl/l See description under TESTS
- Test: Oxygen
- Use an oxygen analyser with a detector scale ranging from 0 μl/l to 100 μl/l and equipped with an electrochemical cell. The gas to be examined is passed through a detection cell containing an aqueous solution, generally potassium hydroxide. Oxygen in the sample gas produces variation in the electrical signal recorded at the outlet of the cell that is proportional to the oxygen content. Calibrate the analyzer according to the instructions of the manufacturer. Pass the gas through the analyser using a suitable pressure regulator and airtight metal tubes and operating at the prescribed flow-rates until constant readings are obtained.
- Test: Carbon monoxide
- Pass 1050 ± 50 ml of the gas sample through a carbon monoxide detector tube at the rate specified for the tube. The indicator change corresponds to not more than 10 μl/l.
Authorised in other additives, enzymes, flavourings and nutrients
These authorisations are not for use in food. They let this substance be used inside another additive, a food enzyme, a flavouring or a nutrient preparation — often as a carrier — and it reaches food only as part of that product. Annex III to Regulation (EC) No 1333/2008.
| Part | May be used in | Maximum level | Citation |
|---|---|---|---|
| Annex III, Part 2: Food additives other than carriers in food additives | All food additive preparationsAuthorised as a member of Table 1 of Part 6, listed as "Table 1" Note (1): Except enzymes authorised as food additives. | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 2, via Table 1 of Part 6 |
| Annex III, Part 3: Food additives including carriers in food enzymes | Food enzymesNote (1): Including enzymes authorised as food additives. | In enzyme preparation: quantum satis In final food except beverages: quantum satis In beverages: quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 3 |
| Annex III, Part 4: Food additives including carriers in food flavourings | All flavouringsAuthorised as a member of Table 1 of Part 6, listed as "Table 1" | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 4, via Table 1 of Part 6 |
| Annex III, Part 5, Section A: Food additives added in nutrients except in nutrients intended to be used in foodstuffs listed in Part E, point 01.10, of Annex II and foodstuffs for infants and young children listed in Part E, point 13.1, of Annex II | All nutrients | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 5, Section A |
Every name it appears under
61 recorded names. A label may use any of them.
E number
- E941
INS number
- 941
CAS registry number
- 7727-37-9
As it appears in regulation
- Nitrogen
Other names
- ASTM D4629 Calibration Set, N @ 0-100 mg/L in Isooctane
- Azote [French]
- Diatomic nitrogen
- Diazyne
- Dinitrogen
- HSDB 5060
- INS NO.941
- INS-941
- Liquid Nitrogen
- MOL Nitrogen
- Molecular nitrogen
- N in Stainless steel
- N in Steel
- Nitrogen
- Nitrogen (JP18/NF)
- Nitrogen (liquified)
- Nitrogen (n2)
- Nitrogen C70f6047-a0cb-4f70-aa3a-78acd681efc3
- Nitrogen Calibration Set: 0-100 mg/L in Isooctane
- Nitrogen Check Standard: N @ 1 ppm in Isooctane
- Nitrogen Check Standard: N @ 10 ppm in Isooctane
- Nitrogen Check Standard: N @ 50 ppm in Isooctane
- Nitrogen Check Standard: N @ 50 ppm in Toluene
- Nitrogen Compressed
- NITROGEN Compressed, NF
- Nitrogen gas
- nitrogen molecule
- Nitrogen Nf
- Nitrogen Set for ASTM D6366: N @ 10, 25, 50, 75, 100 ng/microL in Isooctane
- Nitrogen Standard 0.1% W/W
- Nitrogen, >=99.998%
- Nitrogen, >=99.999%
- Nitrogen, elemental
- Nitrogen, liquid
- Nitrogen, Messer(R) CANGas, 99.999%
- Nitrogen, Refrigerated
- Nitrogen, refrigerated liquid (cryogenic liquid)
- Nitrogen-14
- Nitrogeno
- STEEL, N
Systematic names
- Nitrogen Set for ASTM D6366: N @ Blank, 0.1, 0.5, 1.0, 2.5, 5.0, 10 ng/microL in p-Xylene
Hazard reference values
| Type | Value | Population | Assessed by | Opinion |
|---|---|---|---|---|
| ADI | no ADI necessary | — | JECFA | 1980 |
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.
Common questions
Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.
- What is E 941?
- E 941 is Nitrogen. Nitrogen is the workhorse packaging gas. It flushes oxygen out of bags and bottles so fats do not go rancid, and it is what makes a crisp packet firm.
- What is Nitrogen used for in food?
- It is listed as a propellant — the role Canada, Codex and the US assign it. This page shows every function each regulator records, with the citation for each.
- Where is Nitrogen permitted?
- Of the seven regulators this site reads, Australia and New Zealand, Canada, the EU, Great Britain, South Korea, the US and the Codex standard permit it. Each permission is for named foods at named levels, not a blanket one; the table on this page gives them with citations.
- Is Nitrogen vegan?
- Yes. Nitrogen is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.
Sources for this page
- anz retrieved 2026-10-17
- ca retrieved 2026-10-17
- eu retrieved 2026-10-18
- gb retrieved 2026-10-18
- kr retrieved 2026-10-18
- ecfr retrieved 2026-10-17
- gsfa retrieved 2026-09-07
- euspecs retrieved 2026-10-18
- jecfaspecs retrieved 2026-09-23
Full licence terms and publisher details on Sources. How this page is built and updated: Method.
Machine-readable: a JSON record of this additive is given on request —how to ask for access.
Follow changes to Nitrogen:Atom feed — regulatory events, and any change the weekly refresh detects in its provisions.