Substance profile
Adipic Acid
Adipic Acid is monoclinic prisms from ethyl acetate, water, or acetone and petroleum ether and is odorless.
01 · Identification
What Adipic Acid is
Adipic Acid is monoclinic prisms from ethyl acetate, water, or acetone and petroleum ether and is odorless. Its molecular formula is C6H10O4 and its molecular weight is 146.14 g/mol. It boils at 338 °C, melts at 152 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Adipic Acid identifiers and molecular data
Adipic Acid CAS number and EC number
Adipic Acid molecular formula and molecular weight
03 · GHS classification
Adipic Acid hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Adipic Acid pictograms and signal word
Adipic Acid hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
Adipic Acid hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H319 | Causes serious eye irritation. |
This page lists only the codes assigned to Adipic Acid. 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 Adipic Acid
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 Adipic Acid 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
Adipic Acid precautionary statements
CLP Annex VI assigns 6 precautionary statements to Adipic Acid. 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
Adipic Acid 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 | адипинова киселина |
| Spanish español | Ácido adípico |
| Czech čeština | adipová kyselina |
| Danish dansk | adipinsyre |
| German Deutsch | Adipinsäure |
| Estonian eesti | adipiinhape |
| Greek ελληνικά | αδιπικό οξύ |
| English English | adipic acid |
| French français | acide adipique |
| Croatian hrvatski | adipinska kiselina |
| Italian italiano | acido adipico |
| Latvian latviešu | adipīnskābe |
| Lithuanian lietuvių | adipo rūgštis |
| Hungarian magyar | adipinsav |
| Maltese Malti | aċidu adipiku |
| Dutch Nederlands | adipinezuur |
| Polish polski | kwas adypinowy kwas butano-1,4-dikarboksylowy |
| Portuguese português | ácido adípico |
| Romanian română | acid adipic |
| Slovak slovenčina | kyselina adipová |
| Slovenian slovenščina | adipinska kislina |
| Finnish suomi | adipiinihappo |
| Swedish svenska | adipinsyra |
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
Adipic Acid GHS label elements
Everything CLP Annex VI fixes for Adipic Acid, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Adipic Acid
- Causes serious eye irritation.
- Wash … thoroughly after handling.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF IN EYES:
- Get medical advice/attention.
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Adipic Acid in the GHS label constructor →
07 · Health hazards
Adipic Acid health hazards and exposure limits
Adipic Acid hazard summary
A skin and eye irritant; Practically non-toxic; [CHEMINFO] Occupational asthma reported in a solderer and confirmed by broncho-provocation testing; [Malo] A functional disorder of the autonomic nervous system in workers exposed to adipic acid was reported in 1981. Otherwise, only irritant effects have been reported. [ACGIH] Insoluble in water; May absorb water from the air and corrode metals; Harmful to the environment; [CAMEO]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Adipic Acid 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.
Adipic Acid boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 337.5 °C (639.5 °F) | at 760 mmHg | HSDB |
| 338 °C (640.4 °F) | ICSC | ||
| 265 °C (509 °F) | at 100 mmHg (reduced pressure) | HMDB |
Adipic Acid melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 151.5 °C (304.7 °F) | HSDB | |
| 151.11 °C (304 °F) | CAMEO | ||
| 152 °C (305.6 °F) | ICSC |
Adipic Acid density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.64 g/cm³ | HSDB | |
| 1.36 g/cm³ | at 20 °C | CAMEO | |
| 1.36 g/cm³ | at 25 °C | HSDB |
Adipic Acid solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | In water, 160 g/100 mL boiling water | HSDB | |
| In water, 0.633/100 parts (wt/wt) ether at 19 °C | at 19 °C | HSDB |
Adipic Acid vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 2.265e-7 mmHg | at 25 °C | HSDB |
| 0.075 mmHg | at 18.5 °C | ICSC |
Adipic Acid flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 196.11 °C (385 °F) | HSDB | |
| 191.11 °C (376 °F) | CAMEO | ||
| 196 °C (384.8 °F) | ICSC |
Adipic Acid autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 420 °C (788 °F) | HSDB | |
| 422 °C (791.6 °F) | ICSC |
Adipic Acid lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | In air: (dust) 10-15 mg/l | HSDB | |
| Dust may form explosive mixture with air. | HSDB | ||
| The principal hazard in the handling of adipic acid is the danger of dust explosions. Minimum explosive concentration (dust) is 0.010-0.015 g/L. | HSDB |
Adipic Acid upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 10 to 15 mg/l (dust) (USCG, 1999) | CAMEO | |
| 10-15 mg/l (dust) | OSHA |
Adipic Acid vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 5.04 (air = 1) | HSDB |
Adipic Acid corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Aqueous solutions of adipic acid are corrosive. | HSDB | |
| Corrosion rate for ASTM grade 2 Titanium: 0.0 mm/yr at 232 °C for 67% (wt) concn. | at 232 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Adipic Acid 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.
Adipic Acid fire potential
Combustible when exposed to heat or flame ...
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Adipic Acid storage and handling
Adipic Acid storage conditions
Conditions for safe storage, including any incompatibilities: Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non Combustible Solids.
Source: Hazardous Substances Data Bank (HSDB)
Adipic Acid incompatible materials
Incompatible materials: Strong oxidizing agents.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Adipic Acid in the storage compatibility matrix →
11 · Questions
Adipic Acid — frequently asked questions
What is the CAS number of Adipic Acid?
The CAS number of Adipic Acid is 124-04-9. Its EC number is 204-673-3.
What is the chemical formula of Adipic Acid?
The molecular formula of Adipic Acid is C6H10O4 and its molecular weight is 146.14 g/mol.
What does a Adipic Acid label have to show?
Under CLP Annex VI the label for Adipic Acid carries the pictogram Exclamation mark and the signal word is Warning.
Is Adipic Acid flammable?
CLP Annex VI assigns Adipic Acid 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 196.11 °C (385 °F) (HSDB).
Is Adipic Acid a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Adipic Acid. 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 Adipic Acid?
The boiling point reported for Adipic Acid is 337.5 °C (639.5 °F), at 760 mmHg (HSDB).
What is the melting point of Adipic Acid?
The melting point reported for Adipic Acid is 151.5 °C (304.7 °F) (HSDB).
How should Adipic Acid be stored?
Conditions for safe storage, including any incompatibilities: Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non Combustible Solids. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Adipic Acid
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