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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Description of key information

The oxidising properties of Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc were determined following EU guideline A.17. The test item showed no vigorous reaction during combustion with cellulose in different proportions. For mixtures with a small amount of the test item, fast combustion was observed with burning rates which were to some extent higher than the burning rate of the reference mixture. However, as no vigorous reaction was observed during combustion, these results were suspected to be false positive. According to the guideline, a verification experiment in an inert atmosphere was performed additionally. Here, in the absence of oxygen the mixture was not inflammable. Based on this, the test item is considered to have no oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc showed no vigorous reaction during combustion with cellulose in different proportions. For mixtures with a small amount of the test item, fast combustion was observed with burning rates which were to some extent higher than the burning rate of the reference mixture. However, as no vigorous reaction was observed during combustion, these results were suspected to be false positive. According to the guideline, a verification experiment in an inert atmosphere was performed additionally. Here, in the absence of oxygen the mixture was not inflammable. Based on this, the test item is considered to have no oxidising properties.

Due to the cohesive property of the pulverised test item, it was difficult to mix it with cellulose homogeneously; especially the mixture of 10 % test item with 90 % cellulose. This is probably the reason for the outlier (difference of replicates > 10%). No observations were made which might cause doubts concerning the validity of the study outcome.

The highest burning rate of the three mixtures test item/cellulose with the highest burning rates was determined as 2.78 ± 0.23 mm/s. It is higher than the maximum burning rate of the reference item (2.60 mm/s).

Because no vigorous reaction was observed during combustion, the result was suspected to be false positive. The mixture test item/cellulose (10% / 90 %) with the highest burning rate was additionally tested in an inert atmosphere. In this experiment, the mixture was not inflammable.

The test item Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc is thus classified as not oxidising.

Justification for classification or non-classification

Based on the results obtained, Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc was not classified and labelled, according to Directive 67/548/EEC (DSD) and Regulation (EC) No 1272/2008 (CLP).