Substance profile
C,C'-azodi(formamide)
C,C'-azodi(formamide) is orange-red crystals.
01 · Identification
What C,C'-azodi(formamide) is
C,C'-azodi(formamide) is orange-red crystals. Its molecular formula is C2H4N4O2 and its molecular weight is 116.08 g/mol. It melts at 225 °C, is soluble in water.
Under the GHS it carries the signal word Danger.
02 · Identifiers
C,C'-azodi(formamide) identifiers and molecular data
C,C'-azodi(formamide) CAS number and EC number
C,C'-azodi(formamide) molecular formula and molecular weight
03 · GHS classification
C,C'-azodi(formamide) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
C,C'-azodi(formamide) pictograms and signal word
C,C'-azodi(formamide) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Respiratory sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H334 | GHS08 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
C,C'-azodi(formamide) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled. |
This page lists only the codes assigned to C,C'-azodi(formamide). The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for C,C'-azodi(formamide)
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of C,C'-azodi(formamide) issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
C,C'-azodi(formamide) precautionary statements
CLP Annex VI assigns 7 precautionary statements to C,C'-azodi(formamide). They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
C,C'-azodi(formamide) name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | C , C ′-азоди(формамид) |
| Spanish español | C , C '-Azodi(formamida) |
| Czech čeština | 1,1' -azodi(formamid) |
| Danish dansk | C, C '-azodi(formamid) |
| German Deutsch | C, C'-Azodi(formamid) Azodicarbonamid |
| Estonian eesti | C , C '-asodiformamiid |
| Greek ελληνικά | C , C ′-αζωδι(φορμαμίδιο) |
| English English | C , C '-azodi(formamide) |
| French français | C , C '-azodi(formamide) |
| Croatian hrvatski | C , C '-azodi(formamid) |
| Italian italiano | C , C '-azodi(formammide) azodicarbonammide |
| Latvian latviešu | C , C '-azodi(formamīds) |
| Lithuanian lietuvių | C , C '-azodi(formamidas) |
| Hungarian magyar | C , C '-azodi(formamid) |
| Maltese Malti | C , C '-ażodi(formammid) |
| Dutch Nederlands | C , C '-azodi(formamide) |
| Polish polski | C , C '-azodi(formamid) C , C '-azoformamiddikarbamoilodiazen |
| Portuguese português | C , C '-azodi(formamida) |
| Romanian română | C , C '-azodi(formamidă) |
| Slovak slovenčina | diazéndikarboxamid |
| Slovenian slovenščina | C , C '-azodi(formamid) |
| Finnish suomi | C , C '-atsodi(formamidi) |
| Swedish svenska | C , C '-azodi(formamid) |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
C,C'-azodi(formamide) GHS label elements
Everything CLP Annex VI fixes for C,C'-azodi(formamide), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
C,C'-azodi(formamide)
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- Obtain special instructions before use.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- [In case of inadequate ventilation] wear respiratory protection.
- IF INHALED:
- Call a POISON CENTER/doctor/…
- Remove person to fresh air and keep comfortable for breathing.
- If experiencing respiratory symptoms:
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open C,C'-azodi(formamide) in the GHS label constructor →
07 · Health hazards
C,C'-azodi(formamide) health hazards and exposure limits
C,C'-azodi(formamide) hazard summary
Occupational asthma reported in workers manufacturing plastic and rubber products; [Malo] [Yates VM, et al. Contact dermatitis from azodicarbonamide in earplugs. Contact Dermatitis. 1988 Aug;19(2):155-6. No abstract available.] [Allergic contact dermatitis to azodicarbonamide. Bonsall JL. Contact Dermatitis. 1984 Jan;10(1):42. No abstract available.] An eye and respiratory tract irritant; A skin sensitizer; May cause asthma; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
C,C'-azodi(formamide) properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
C,C'-azodi(formamide) boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | Decomposes (NTP, 1992) | decomposes | CAMEO |
C,C'-azodi(formamide) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 225 °C (437 °F) | DOE PAC | |
| 225 °C (437 °F) | decomposes, decomposes | HSDB | |
| 225 °C (437 °F) | decomposes | CAMEO |
C,C'-azodi(formamide) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.65 g/cm³ | ICSC | |
| 1.65 g/cm³ | at 20 °C | HSDB |
C,C'-azodi(formamide) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | SLIGHTLY SOL IN ETHER; INSOL IN ORGANIC SOLVENTS | HSDB | |
| Soluble in dimethyl sulfoxide; insoluble in common solvents | HSDB | ||
| Very slightly soluble in hot water; insoluble in alcohol | HSDB |
C,C'-azodi(formamide) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.88e-10 mmHg | at 20 °C | HSDB |
| 7.1 mmHg | at 19 °C | CAMEO | |
| 2.4e-8 mmHg | at 50 °C | HSDB |
C,C'-azodi(formamide) flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 96.11 °C (205 °F) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
C,C'-azodi(formamide) fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
C,C'-azodi(formamide) fire potential
Flammable
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
C,C'-azodi(formamide) storage and handling
C,C'-azodi(formamide) reactivity
AZODICARBONAMIDE is easily ignited and burns rapidly. Confined samples show a high rate of pressure rise during thermal decomposition, which produces carbon monoxide and nitrogen. Sensitive to temperatures exceeding 122 °F. May be sensitive to exposure to light. Stable in bulk when stored for two weeks at temperatures up to 140 °F. Slightly unstable in water suspension (showed 1.3% decomposition at 2 mg/mL over a two-week period at room temperature in the light but no decomposition at 41 °F over a two-week period in the dark (NTP, 1992). Reacts with hot water to give nitrogen, carbon monoxide, and ammonia [Hawley]. Decomposes in hot hydrochloric acid. Incompatible with strong acids and bases, and with compounds of metals.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check C,C'-azodi(formamide) in the storage compatibility matrix →
11 · Questions
C,C'-azodi(formamide) — frequently asked questions
What is the CAS number of C,C'-azodi(formamide)?
The CAS number of C,C'-azodi(formamide) is 123-77-3. Its EC number is 204-650-8.
What is the chemical formula of C,C'-azodi(formamide)?
The molecular formula of C,C'-azodi(formamide) is C2H4N4O2 and its molecular weight is 116.08 g/mol.
What does a C,C'-azodi(formamide) label have to show?
Under CLP Annex VI the label for C,C'-azodi(formamide) carries the pictogram Health hazard and the signal word is Danger.
Is C,C'-azodi(formamide) flammable?
CLP Annex VI assigns C,C'-azodi(formamide) no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 96.11 °C (205 °F) (CAMEO).
Is C,C'-azodi(formamide) a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for C,C'-azodi(formamide). Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the boiling point of C,C'-azodi(formamide)?
The boiling point reported for C,C'-azodi(formamide) is Decomposes (NTP, 1992), decomposes (CAMEO).
What is the melting point of C,C'-azodi(formamide)?
The melting point reported for C,C'-azodi(formamide) is 225 °C (437 °F) (DOE PAC).
Nearby
Substances next to C,C'-azodi(formamide)
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