Provenance

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

Build a label

Substance profile

Benzophenone-3,3',4,4'-tetracarboxylic dianhydride

Benzophenone-3,3',4,4'-tetracarboxylic dianhydride: dry Powder.

CAS 2421-28-5 C17H6O7 322.22 g/mol Warning

01 · Identification

What Benzophenone-3,3',4,4'-tetraca… is

Benzophenone-3,3',4,4'-tetracarboxylic dianhydride: dry Powder. Its molecular formula is C17H6O7 and its molecular weight is 322.22 g/mol.

Under the GHS it carries the signal word Warning.

02 · Identifiers

Benzophenone-3,3',4,4'-tetraca… identifiers and molecular data

Benzophenone-3,3',4,4'-tetraca… CAS number and EC number

CAS number2421-28-5
EC number219-348-1
Index number (CLP Annex VI)607-100-00-9

Benzophenone-3,3',4,4'-tetraca… molecular formula and molecular weight

Molecular formulaC17H6O7
Molecular weight322.22 g/mol

Other names for Benzophenone-3,3',4,4'-tetraca…

  • 4,4'-carbonyldi(phthalic anhydride)

03 · GHS classification

Benzophenone-3,3',4,4'-tetraca… hazard classification

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

Benzophenone-3,3',4,4'-tetraca… pictograms and signal word

Signal wordWarning

Benzophenone-3,3',4,4'-tetraca… hazard class and category

GHS hazard classes Benzophenone-3,3',4,4'-tet… falls into
Hazard class Category From code Pictogram
Serious eye damage/eye irritation GHS chapter 3.3 Category 2A H319 GHS07
Specific target organ toxicity - single exposure GHS chapter 3.8 Category 3 H335 GHS07

Benzophenone-3,3',4,4'-tetraca… hazard statements (H-codes)

Hazard statements assigned to Benzophenone-3,3',4,4'-tet…
CodeHazard statement
H335 May cause respiratory irritation.
H319 Causes serious eye irritation.

This page lists only the codes assigned to Benzophenone-3,3',4,4'-tet…. 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 Benzophenone-3,3',4,4'-tet…

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 Benzophenone-3,3',4,4'… 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

Benzophenone-3,3',4,4'-tetraca… precautionary statements

CLP Annex VI assigns 6 precautionary statements to Benzophenone-3,3',4,4'-tet…. 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.

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

Benzophenone-3,3',4,4'-tetraca… 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 бензофенон-3,3′,4,4′-тетракарбоксилен дианхидрид 4,4′-карбонилди(фталов анхидрид)
Spanish español Dianhídrido benzofenona-3,3',4,4'-tetracarboxílico 4,4'-carbonildi(anhídrido ftálico)
Czech čeština benzofenon-3,4,3',4'-tetrakarboxdianhydrid 4,4'-karbonylbis(ftalanhydrid)
Danish dansk 3,3',4,4'-benzophenontetracarboxylsyredianhydrid 4,4'-carbonyldi(phtalsyreanhydrid)
German Deutsch 3,3',4,4'-Benzophenontetracarbonsäuredianhydrid 4,4'-Carbonyldiphthaleinsäureanhydrid
Estonian eesti bensofenoon-3,3',4,4'-tetrakarboksüülhappe dianhüdriid 4,4'-karbonüüldi(ftaalanhüdriid)
Greek ελληνικά βενζοφαινονο-3,3′,4,4′-τετρακαρβοξυλικός διανυδρίτης 4,4′-καρβονυλοδι(φθαλικός ανυδρίτης)
English English benzophenone-3,3',4,4'-tetracarboxylic dianhydride 4,4'-carbonyldi(phthalic anhydride)
French français dianhydride benzophénone-3,3',4,4'-tétracarboxylique anhydride 4,4'-carbonyldi(phtalique)
Croatian hrvatski dianhidrid benzofenon-3,3',4,4'-tetrakarboksilne kiseline 4,4'-karbonil-di(ftalni anhidrid)
Italian italiano dianidride 3,3',4,4'-benzofenontetracarbossilica 4,4'-carbonildi(ftalic anidride)
Latvian latviešu benzofenon-3,3′,4,4′-tetrakarbonskābes dianhidrīds 4,4′-karbonildi(ftalskābes anhidrīds)
Lithuanian lietuvių benzfenono-3,3',4,4'-tetrakarboksirūgšties dianhidridas 4,4'-karbonildiftalio rūgšties anhidridas
Hungarian magyar benzofenon-3,3’,4,4’-tetrakarbonsav-dianhidrid 4,4'-karbonildi(ftálsav-anhidrid)
Maltese Malti dianidride benżofenon-3,3',4,4'-tetrakarbossiliku (anidride) 4,4'-karbonildi(ftaliku)
Dutch Nederlands benzofenon-3,3',4,4'-tetracarbonzuurdianhydride 4,4'-carbonyldi(ftaalzuuranhydride)
Polish polski dibezwodnik benzofenono-3,3',4,4'-tetrakarboksylowy dibezwodnik 4,4'-karbonylodiftalowy
Portuguese português dianidrido benzofenona-3,3',4,4'-tetracarboxílico dianidrido 4,4'-carbonildiftálico
Romanian română dianhidrida acidului benzofenon-3,3',4,4'-tetracarboxlic dianhidrida acidului 4,4'-carbonildiftalic
Slovak slovenčina dianhydrid kyseliny benzofenón-3,3',4,4'-tetrakarboxylovej 4,4'-karbonyldi(ftalanhydrid)
Slovenian slovenščina dianhidrid benzofenon-3,3',4,4'-tetrakarboksilne kisline 4,4'-karbonildi(anhidrid ftalne kisline)
Finnish suomi bentsofenoni-3,3',4,4'-tetrakarboksyylihappodianhydridi 4,4'-karbonyylidi(ftaalihappoanhydridi)
Swedish svenska bensofenon-3,3',4,4'-tetrakarboxylsyradianhydrid 4,4'-karbonyldi(ftalsyraanhydrid)

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

Benzophenone-3,3',4,4'-tetraca… GHS label elements

Everything CLP Annex VI fixes for Benzophenone-3,3',4,4'-tet…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.

GHS07 Exclamation mark pictogram

Warning

Benzophenone-3,3',4,4'-tetraca…

  • May cause respiratory irritation.
  • 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 Benzophenone-3,3',4,4'-tet… in the GHS label constructor →

07 · Health hazards

Benzophenone-3,3',4,4'-tetraca… health hazards and exposure limits

Benzophenone-3,3',4,4'-tetraca… hazard summary

A skin sensitizer; [Quick CPC] An irritant that may cause severe eye irritation; [Alfa Aesar MSDS] See ACID ANHYDRIDES.

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

08 · Questions

Benzophenone-3,3',4,4'-tetraca… — frequently asked questions

What is the CAS number of Benzophenone-3,3',4,4'-tetraca…?

The CAS number of Benzophenone-3,3',4,4'-tetraca… is 2421-28-5. Its EC number is 219-348-1.

What is the chemical formula of Benzophenone-3,3',4,4'-tetraca…?

The molecular formula of Benzophenone-3,3',4,4'-tetraca… is C17H6O7 and its molecular weight is 322.22 g/mol.

What does a Benzophenone-3,3',4,4'-tetraca… label have to show?

Under CLP Annex VI the label for Benzophenone-3,3',4,4'-tetraca… carries the pictogram Exclamation mark and the signal word is Warning.

Is Benzophenone-3,3',4,4'-tetraca… flammable?

CLP Annex VI assigns Benzophenone-3,3',4,4'-tetraca… 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 Benzophenone-3,3',4,4'-tetraca… a carcinogen?

CLP Annex VI records no harmonised carcinogenicity classification for Benzophenone-3,3',4,4'-tetraca…. 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.

Nearby

Substances next to Benzophenone-3,3',4,4'-tet…

Keep going: substances starting with B, or search the whole database by name, CAS number, pictogram or signal word.

Get the free GHS / CLP / OSHA deadline calendar

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