Summary of Classification and Labelling
Notified classification and labelling
General Information
EC / List no.

EC: European Community number/ List no.: List number assigned by ECHA.

List Numbers are purely technical identifiers for processing a submission via REACH-IT. More information: https://echa.europa.eu/information-on-chemicals/registered-substances/information

Name CAS Number
The CAS number associated with this substance in the EC Inventory and/or REACH-IT is reported here. In some cases, e.g. for differently hydrated forms of the same substance, alternative CAS numbers have been notified. In those cases, the additional CAS numbers are published in the column “additional notified information” below.
202-653-9 4-tert-butylpyrocatechol 98-29-3

Notified classification and labelling according to CLP criteria
Classification Labelling Specific Concentration limits, M-Factors Notes Classification affected by Impurities / Additives

This check appears when a notifier has indicated that an impurity or an additive present in the substance impacts the notified classification. ECHA cannot reveal the identity of the impurity/additive or determine the exact impact it has on the classification.

Additional Notified Information

State/form: The notified state/form of the substance for all notifications classifying in this manner is reported under this link. Additional CAS number(s): Occasionally, a notification contains a different CAS number than the one reported under the general information section above. In those cases, all different notified CAS numbers associated with the aggregated classification are reported under this link. IUPAC name(s): Publicly available IUPAC names from all notifications classifying in this manner are reported under this link.

Number of Notifiers

This number indicates how many companies notified this classification. All members of a REACH registration joint submission and all participants in a group of manufacturers/importers who notified are counted. The grouping is done automatically with no manual verification.

Joint Entries

This check appears when a classification comes from a lead dossier of a REACH registration joint submission. When a member submits a classification separately under Article 11(3) of REACH (opt-out), this classification is displayed separately and not marked as a joint entry.

Hazard Class and Category Code(s) Hazard Statement Code(s) Hazard Statement Code(s) Supplementary Hazard Statement Code(s) Pictograms, Signal Word Code(s)
Acute Tox. 4 H302   GHS09
GHS05
GHS07
Dgr
M=1
State/Form
IUPAC Names
9 yes View details
  H302+H312
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400 H400
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
868 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
249 View details
  H311
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Chronic 2 H411 H411
Skin Corr. 1B H314 H314 GHS09
GHS05
Dgr
91 View details
Aquatic Chronic 2 H411 H411
Skin Corr. 1B H314 H314 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
66 View details
Skin Sens. 1 H317 H317
Eye Dam. 1 H318 H318
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS05
Dgr
IUPAC Names 48 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
35 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318 H318
Aquatic Acute 1 H400 H400
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
IUPAC Names 31 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Acute 1 H400 H400
Aquatic Chronic 1 H410 H410
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
IUPAC Names 29 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Eye Dam. 1 H318  
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302   GHS09
GHS05
GHS07
Dgr
M(Chronic)=1
M=1
State/Form
IUPAC Names
29 View details
  H302+H312
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1A H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400  
Aquatic Chronic 1 H410 H410
Acute Tox. 4 H302   GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
24 View details
  H302+H312
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Acute 1 H400  
Aquatic Chronic 1 H410 H410
Acute Tox. 4 H302 H302 GHS09
Dgr
State/Form
IUPAC Names
22 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400  
Aquatic Chronic 1 H410  
  H411
Not Classified               21  
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS06
Dgr
State/Form
IUPAC Names
18 View details
Acute Tox. 3 H311 H311
Skin Corr. 1B H314 H314
Aquatic Chronic 2 H411 H411
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
18 View details
Acute Tox. 4 H312 H312
Skin Corr. 1 H314 H314
Skin Sens. 1A H317 H317
Eye Dam. 1 H318 H318
Aquatic Acute 1 H400 H400
Aquatic Chronic 1 H410 H410
Acute Tox. 4 H312 H312 GHS05
GHS07
Dgr
State/Form
16 View details
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
IUPAC Names 10 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Acute 1 H400  
  H410
Aquatic Chronic 2 H411  
Acute Tox. 4 H302   GHS09
GHS05
GHS07
Dgr
M=1
State/Form
IUPAC Names
7 View details
  H302+H312
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400 H400
  H410
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
M=1
IUPAC Names 6 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318 H318
Aquatic Acute 1 H400 H400
Aquatic Chronic 2 H411 H411
Acute Tox. 3 H311 H311 GHS09
GHS05
GHS06
Dgr
State/Form
4 View details
Skin Corr. 1B H314 H314
Aquatic Chronic 2 H411 H411
Acute Tox. 3 H311 H311 GHS06
Dgr
State/Form
3 View details
Skin Irrit. 2 H315 H315
Eye Irrit. 2 H319 H319
  H335
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
2 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Chronic 2 H411 H411
  H302 GHS09
GHS05
GHS07
Dgr
2 View details
  H312
  H314
  H317
  H411
Acute Tox. 4 H302   Dgr
IUPAC Names 2 View details
Acute Tox. 4 H312  
Skin Corr. 1B H314  
Aquatic Chronic 2 H411  
  NA
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
M=1
State/Form
IUPAC Names
1 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400 H400
  H410
Acute Tox. 3 H311 H311 GHS06
Dgr
State/Form
IUPAC Names
1 View details
Skin Irrit. 2 H315 H315
Skin Sens. 1 H317 H317
Eye Irrit. 2 H319 H319
Acute Tox. 4 H302 H302 GHS09
GHS08
GHS05
Dgr
State/Form
1 View details
Acute Tox. 4 H312 H312
Skin Corr. 1C H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318 H318
Acute Tox. 4 H332 H332
Carc. 2 H351 (Dermal) H351
Repr. 2 H361 (Dermal) H361
Acute Tox. 4 H302 H302 GHS09
GHS05
GHS07
Dgr
1 View details
Acute Tox. 4 H312 H312
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Aquatic Acute 1 H400 H400
Acute Tox. 4 H302   GHS09
GHS05
GHS07
Dgr
State/Form
IUPAC Names
1 View details
Acute Tox. 4 H312  
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
Eye Dam. 1 H318  
Aquatic Acute 1 H400 H400
  H410
Acute Tox. 4 H312 H312 GHS05
GHS07
Dgr
State/Form
IUPAC Names
1 View details
Skin Corr. 1B H314 H314
Skin Sens. 1 H317 H317
STOT SE 3 H335 (Not available) H335

Number of Aggregated Notifications: 30