Provenance

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

Build a label

Substance profile

5-(3-(Carboxymethyl)-5-(2-(3-ethyl-2(3H)-benzothiazolylidene)-1-methylethylidene)-4-oxo-2-thiazolidinylidene)-4-oxo-2-thioxo-3-thiazolidineacetic acid

5-(3-(Carboxymethyl)-5-(2-(3-ethyl-2(3H)-benzothiazolylidene)-1-methylethylidene)-4-oxo-2-thiazolidinylidene)-4-oxo-2-thioxo-3-thiazolidineacetic acid is a chemical substance with the molecular formula C22H19N3O6S4.

CAS 166596-68-5 C22H19N3O6S4 549.7 g/mol Danger

01 · Identification

What 5-(3-(Carboxymethyl)-5-(2-(3-e… is

5-(3-(Carboxymethyl)-5-(2-(3-ethyl-2(3H)-benzothiazolylidene)-1-methylethylidene)-4-oxo-2-thiazolidinylidene)-4-oxo-2-thioxo-3-thiazolidineacetic acid is a chemical substance with the molecular formula C22H19N3O6S4. Its molecular formula is C22H19N3O6S4 and its molecular weight is 549.7 g/mol.

Under the GHS it carries the signal word Danger.

02 · Identifiers

5-(3-(Carboxymethyl)-5-(2-(3-e… identifiers and molecular data

5-(3-(Carboxymethyl)-5-(2-(3-e… CAS number and EC number

CAS number166596-68-5
EC number422-240-9
Index number (CLP Annex VI)607-419-00-3

5-(3-(Carboxymethyl)-5-(2-(3-e… molecular formula and molecular weight

Molecular formulaC22H19N3O6S4
Molecular weight549.7 g/mol

Other names for 5-(3-(Carboxymethyl)-5-(2-(3-e…

  • (3'-carboxymethyl-5-(2-(3-ethyl-3H-benzothiazol-2-ylidene)-1-methyl-ethylidene)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinyliden-3-yl)-acetic acid

03 · GHS classification

5-(3-(Carboxymethyl)-5-(2-(3-e… hazard classification

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

5-(3-(Carboxymethyl)-5-(2-(3-e… pictograms and signal word

Signal wordDanger

5-(3-(Carboxymethyl)-5-(2-(3-e… hazard class and category

GHS hazard classes 5-(3-(Carboxymethyl)-5-(2… falls into
Hazard class Category From code Pictogram
Serious eye damage/eye irritation GHS chapter 3.3 Category 1 H318 GHS05
Skin sensitisation GHS chapter 3.4 Category 1 or 1A or 1B H317 GHS07

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.

5-(3-(Carboxymethyl)-5-(2-(3-e… hazard statements (H-codes)

Hazard statements assigned to 5-(3-(Carboxymethyl)-5-(2…
CodeHazard statement
H318 Causes serious eye damage.
H317 May cause an allergic skin reaction.

This page lists only the codes assigned to 5-(3-(Carboxymethyl)-5-(2…. 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 5-(3-(Carboxymethyl)-5-(2…

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 5-(3-(Carboxymethyl)-5… 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

5-(3-(Carboxymethyl)-5-(2-(3-e… precautionary statements

CLP Annex VI assigns 8 precautionary statements to 5-(3-(Carboxymethyl)-5-(2…. 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

5-(3-(Carboxymethyl)-5-(2-(3-e… 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 (3′-карбоксиметил-5-(2-(3-етил-3 H -бензотиазол-2-илиден)-1-метилетилиден)-4,4′-диоксо-2′-тиоксo-(2,5′)-битиазолидинилиден-3-ил)оцетна киселина
Spanish español Ácido (3'-carboximetil-5-(2-(3-etil-3 H -benzotiazol-2-iliden)-1-metiletiliden)-4,4'-dioxo-2'-tioxo-(2,5')bitiazolidiniliden-3-il)acético
Czech čeština 5-[1-(3-ethyl-2,3-dihydrobenzothiazol-2-yliden)propan-2-yliden]-4,4'-dioxo-2'-thioxo-2,5'-bithiazolidinyliden-3,3'-dioctová kyselina
Danish dansk (3'-carboxymethyl-5-(2-(3-ethyl-3 H- benzothiazol-2-yliden)-1-methyl-ethyliden)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinyliden-3-yl)-eddikesyre
German Deutsch (3'-Carboxymethyl-5-(2-(3-ethyl-3 H -benzothiazol-2-yliden)-1-methyl-ethyliden)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinyliden-3-yl)-essigsäure
Estonian eesti (3'-karboksümetüül-5-(2-(3-etüül-3 H -bensotiasool-2-ülideen)-1-metüületülideen)-4,4'-diokso-2'-tiokso-(2,5')bitiasolidinülideen-3-üül)äädikhape
Greek ελληνικά (3′-καρβοξυμεθυλ-5-(2-(3-αιθυλο-3 H -βενζοθειαζολ-2-υλιδενο)-1-μεθυλαιθυλιδενο)-4,4′-διοξο-2′-θειοξο-(2,5′)-διθειαζωλιδινυλιδεν-3-υλ)-οξικό οξύ
English English (3'-carboxymethyl-5-(2-(3-ethyl-3 H -benzothiazol-2-ylidene)-1-methyl-ethylidene)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinyliden-3-yl)-acetic acid
French français acide (3'-carboxyméthyl-5-(2-(3-éthyl-3 H -benzothiazol-2-ylidène)-1-méthyl-éthylidène)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinylidèn-3-yl)-acétique
Croatian hrvatski (3'-karboksimetil-5-(2-(3-etil-3 H -benzotiazol-2-iliden)-1-metil-etiliden)-4,4'-diokso-2'-tiokso-(2,5')bitiazolidiniliden-3-il)octena kiselina
Italian italiano acido (3'-carbossimetil-5-(2-(3-etil-3 H -benzotiazol-2-iliden)-1-metil-etiliden)-4,4'-diosso-2'-tiosso-(2,5')bitiazolidiniliden-3-il)- acetico
Latvian latviešu (3′-karboksimetil-5-(2-(3-etil-3 H -benztiazol-2-ilidēn)-1-metiletilidēn)-4,4′-diokso-2′-tiokso-(2,5′)-bitiazolidīnilidēn-3-il)etiķskābe
Lithuanian lietuvių (3′-karboksimetil-5-(2-(3-etil-3 H -benztiazol-2-iliden)-1-metiletiliden)-4,4′-diokso-2′-tiokso-(2,5′)bitiazolidiniliden-3-il)acto rūgštis
Hungarian magyar (3’-karboximetil-5-(2-(3-etil-3 H -benzotiazol-2-ilidén)-1-metiletilidén)-4,4’-dioxo-2’-tioxo-(2,5’)bitiazolidinilidén-3-il)ecetsav
Maltese Malti aċidu (3'-karbossimetil-5-(2-(3-etil-3 H -benżotijażol-2-iliden)-1-metil-etiliden)-4,4'-diosso-2'-tijosso-(2,5')bitijażolidiniliden-3-il)-aċetiku
Dutch Nederlands (3'-carboxymethyl-5-(2-(3-ethyl-3 H -benzothiazool-2-ylideen)-1-methylethylideen)-4,4'-dioxo-2'-thioxo-(2,5')bithiazolidinylideen-3-yl)-azijnzuur
Polish polski kwas {3'-karboksymetylo-5-[2-(3-etylo-3 H -benzotiazol-2-ylideno)-1-metyloetylideno]-4,4'-diokso-2'-tiokso-(2,5')-bitiazolidynyliden-3-ylo}octowy
Portuguese português ácido (3'-carboximetil-5-(2-(3-etil-3 H -benzotiazol-2-ilideno)-1-metiletilideno)-4,4'-dioxo-2'-tioxo-(2,5')-bitiazolidiniliden-3-il)acético
Romanian română acid (3'-carboximetil-5-(2-(3-etil-3 H -benzotiazol-2-iliden)-1-metil-etiliden)-4,4'-dioxo-2'-tioxo-(2,5')bitiazolidiniliden-3-il)acetic
Slovak slovenčina kyselina 5-[1-(3-etyl-2,3-dihydrobenzotiazol-2- ylidén)propán-2-ylidén]-4,4'-dioxo-2'-tioxo-2,5'-bitiazolidín-3,3'-dioctová
Slovenian slovenščina (3'-karboksimetil-5-(2-(3-etil-3 H -benzotiazol-2-iliden)-1-metil-etiliden)-4,4'-diokso-2'-tiokso-(2,5')bitiazolidiniliden-3-il)-ocetna kislina
Finnish suomi (3'-karboksimetyyli-5-(2-(3-etyyli-3 H -bentsotiatsol-2-ylideeni)-1-metyylietylideeni)-4,4'-diokso-2'-tiokso(2,5')bitiatsolidinyliden-3-yyli)etikkahappo
Swedish svenska (3'-karboximetyl-5-(2-(3-etyl-3 H -bensotiazol-2-yliden)-1-metyletyliden)-4,4'-dioxo-2'-tioxo-(2,5')bitiazolidinyliden-3-yl)-ättiksyra

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

5-(3-(Carboxymethyl)-5-(2-(3-e… GHS label elements

Everything CLP Annex VI fixes for 5-(3-(Carboxymethyl)-5-(2…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.

GHS05 Corrosion pictogramGHS07 Exclamation mark pictogram

Danger

5-(3-(Carboxymethyl)-5-(2-(3-e…

  • Causes serious eye damage.
  • May cause an allergic skin reaction.
  • Avoid breathing dust/fume/gas/mist/vapours/spray.
  • Contaminated work clothing should not be allowed out of the workplace.
  • Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/
  • IF IN EYES:
  • Immediately call a POISON CENTER/doctor/
  • Get medical advice/attention.
  • If skin irritation or rash occurs:
  • 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 5-(3-(Carboxymethyl)-5-(2… in the GHS label constructor →

07 · Questions

5-(3-(Carboxymethyl)-5-(2-(3-e… — frequently asked questions

What is the CAS number of 5-(3-(Carboxymethyl)-5-(2-(3-e…?

The CAS number of 5-(3-(Carboxymethyl)-5-(2-(3-e… is 166596-68-5. Its EC number is 422-240-9.

What is the chemical formula of 5-(3-(Carboxymethyl)-5-(2-(3-e…?

The molecular formula of 5-(3-(Carboxymethyl)-5-(2-(3-e… is C22H19N3O6S4 and its molecular weight is 549.7 g/mol.

What does a 5-(3-(Carboxymethyl)-5-(2-(3-e… label have to show?

Under CLP Annex VI the label for 5-(3-(Carboxymethyl)-5-(2-(3-e… carries the pictograms Corrosion and Exclamation mark and the signal word is Danger.

Is 5-(3-(Carboxymethyl)-5-(2-(3-e… flammable?

CLP Annex VI assigns 5-(3-(Carboxymethyl)-5-(2-(3-e… 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 5-(3-(Carboxymethyl)-5-(2-(3-e… a carcinogen?

CLP Annex VI records no harmonised carcinogenicity classification for 5-(3-(Carboxymethyl)-5-(2-(3-e…. 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.

Get the free GHS / CLP / OSHA deadline calendar

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