Provenance

Reference data from EU CLP Annex VI and published regulations — verify against your supplier's SDS before use.

Build a label

Substance profile

Isoxaben

Isoxaben is a white crystalline solid with a mild aromatic odor.

CAS 82558-50-7 C18H24N2O4 332.4 g/mol

01 · Identification

What Isoxaben is

Isoxaben is a white crystalline solid with a mild aromatic odor. Its molecular formula is C18H24N2O4 and its molecular weight is 332.4 g/mol. It melts at 178 °C.

It is classed as carcinogens.

02 · Identifiers

Isoxaben identifiers and molecular data

Isoxaben CAS number and EC number

CAS number82558-50-7
EC number407-190-8
Index number (CLP Annex VI)616-043-00-9

Isoxaben molecular formula and molecular weight

Molecular formulaC18H24N2O4
Molecular weight332.4 g/mol
Chemical class Carcinogens

Other names for Isoxaben

  • isoxaben (ISO)
  • N-[3-(1-ethyl-1-methylpropyl)-1,2-oxazol-5-yl]-2,6-dimethoxybenzamide

03 · GHS classification

Isoxaben hazard classification

Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.

Isoxaben hazard class and category

GHS hazard classes Isoxaben falls into
Hazard class Category From code Pictogram
Hazardous to the aquatic environment - chronic GHS chapter 4.1 Category 4 H413

Isoxaben hazard statements (H-codes)

Hazard statements assigned to Isoxaben
CodeHazard statement
H413 May cause long lasting harmful effects to aquatic life.

This page lists only the codes assigned to Isoxaben. 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 Isoxaben

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 Isoxaben 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

Isoxaben precautionary statements

CLP Annex VI assigns 2 precautionary statements to Isoxaben. 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.

Disposal

What has to happen to the contents and the empty container.

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

Isoxaben 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 изоксабен (ISO) N -[3-(1-етил-1-метилпропил)-1,2-оксазол-5-ил]-2,6-диметоксибензамид
Spanish español Isoxabén (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oxazol-5-il]-2,6-dimetoxibenzamida
Czech čeština isoxaben (ISO) N -[3-(1-ethyl-1-methylpropyl)isoxazol-5-yl]-2,6-dimethoxybenzamid
Danish dansk isoxaben (ISO) N- (3-(1-ethyl-1-methylpropyl)-1,2-oxazol-5-yl)-2,6-dimethoxybenzamid
German Deutsch Isoxaben (ISO) N -[3-(1-Ethyl-1-methylpropyl)-1,2-oxazol-5-yl]-2,6-dimethoxybenzamid
Estonian eesti isoksabeen (ISO) N -[3-(1-etüül-1-metüülpropüül)-1,2-oksasool-5-üül]-2,6-dimetoksübensamiid
Greek ελληνικά isoxaben (ισοξαβένη) (ISO) N -[3-(1-αιθυλο-1-μεθυλοπροπυλο)-1,2-οξαζολ-5-υλο]-2,6-διμεθοξυβενζαμίδιο
English English isoxaben (ISO) N -[3-(1-ethyl-1-methylpropyl)-1,2-oxazol-5-yl]-2,6-dimethoxybenzamide
French français isoxabène (ISO) N -[3-(1-éthyl-1-méthylpropyl)-1,2-oxazol-5-yl]-2,6-diméthoxybenzamide
Croatian hrvatski izoksaben (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oksazol-5-il]-2,6-dimetoksibenzamid
Italian italiano isoxaben (ISO) N -(3-(1-etil-1-metilpropil)-1,2-ossazol-5-il)-2,6-dimetossibenzammide
Latvian latviešu izoksabēns (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oksazol-5-il]-2,6-dimetoksibenzamīds
Lithuanian lietuvių izoksabenas (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oksazol-5-il]-2,6-imetoksibenzamidas
Hungarian magyar izoxaben (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oxazol-5-il]-2,6-dimetoxibenzamid
Maltese Malti isossaben (ISO) N -[3-(1-etil-1-metilpropil)-1,2-ossażol-5-il]-2,6-dimetossibenżammid
Dutch Nederlands isoxaben (ISO) N -[3-(1-ethyl-1-methylpropyl)-1,2-oxazool-5-yl]-2,6-dimethoxybenzamide
Polish polski izoksaben (ISO) N-[3-(1-etylo-1-metylopropylo)1,2-oksazol-5-ilo]-2,6-dimetoksybenzamid
Portuguese português isoxabena (ISO) N -(3-(1-etil-1-metilpropil)-1,2-oxazol-5-il)-2,6-dimetoxibenzamida
Romanian română isoxaben (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oxazol-5-il]-2,6-dimetoxibenzamidă
Slovak slovenčina izoxabén (ISO) 2,6-dimetoxy- N -[3-(3-metylpropán-3-yl)-1,2-oxazol-5-yl]benzamid
Slovenian slovenščina izoksaben (ISO) N -[3-(1-etil-1-metilpropil)-1,2-oksazol-5-il]-2,6-dimetoksibenzamid
Finnish suomi isoksabeeni (ISO) N -[3-(1-etyyli-1-metyylipropyyli)-1,2-oksatsol-5-yyli]-2,6-dimetoksibentsamidi
Swedish svenska isoxaben (ISO) N -[3-(1-etyl-1-metylpropyl)-1,2-oxazol-5-yl]-2,6-dimetoxibensamid

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

Isoxaben GHS label elements

Everything CLP Annex VI fixes for Isoxaben, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.

Isoxaben

  • May cause long lasting harmful effects to aquatic life.
  • Avoid release to the environment.
  • Dispose of contents/container to

Supplier name, address and telephone number· Product identifier·Nominal quantity

Need this as an actual label? Open Isoxaben in the GHS label constructor →

07 · Health hazards

Isoxaben health hazards and exposure limits

Isoxaben hazard summary

May cause irritation; Targets the liver; [MSDSonline]

Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

Isoxaben carcinogenicity classification

Cancer Classification: Group C Possible Human Carcinogen

Source: Hazardous Substances Data Bank (HSDB)

An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.

08 · Physical and chemical properties

Isoxaben 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.

Isoxaben melting point

Property Value Conditions Source
Melting point 177.5 °C (351.5 °F) range, midpoint shown HSDB

Isoxaben solubility

Property Value Conditions Source
Solubility Slight solubility in organic solvents (methanol, ethyl acetate, dichloromethane, acetonitrile) HSDB
In water, 1.42 mg/L at pH 7 and 20 °C HSDB
At 25 °C, methanol and ethyl acetate 50-100 mg/mL; acetonitrile 30-35 mg/mL; toluene 4-5mg/mL; hexane 0.07-0.08 mg/mL; and water 0.001-0.002 mg/mL at 25 °C HSDB

Isoxaben vapor pressure

Property Value Conditions Source
Vapor pressure 4.13e-9 mmHg at 25 °C HSDB

Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.

09 · Handling and storage

Isoxaben storage and handling

Isoxaben storage conditions

Store in a cool, dry, well ventilated, secure area out of reach of children and animals.

Source: Hazardous Substances Data Bank (HSDB)

Planning storage for a mix of chemicals? Check Isoxaben in the storage compatibility matrix →

10 · Questions

Isoxaben — frequently asked questions

What is the CAS number of Isoxaben?

The CAS number of Isoxaben is 82558-50-7. Its EC number is 407-190-8.

What is the chemical formula of Isoxaben?

The molecular formula of Isoxaben is C18H24N2O4 and its molecular weight is 332.4 g/mol.

Is Isoxaben flammable?

CLP Annex VI assigns Isoxaben 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.

Is Isoxaben a carcinogen?

CLP Annex VI records no harmonised carcinogenicity classification for Isoxaben. 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 melting point of Isoxaben?

The melting point reported for Isoxaben is 177.5 °C (351.5 °F), range, midpoint shown (HSDB).

How should Isoxaben be stored?

Store in a cool, dry, well ventilated, secure area out of reach of children and animals. (Hazardous Substances Data Bank (HSDB))

Get the free GHS / CLP / OSHA deadline calendar

Verified 2026–2029 compliance dates in one PDF — plus alerts when the rules change.