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Classification & Labelling & PBT assessment

GHS

General Information

Name:
Tungsten Carbide
Not classified
Implementation:
EU
Type of classification:
self-classification
Remarks:

A total of 15 tungsten carbide powder samples with a Fisher Sub Sieve Size (FSSS) ranging from 0.21 um to 1.43 um were test for flammability. The flammability tests were performed per UN Manual of Tests and Criteria for Transportation of Dangerous Goods, Section 33, Classification Procedures, Test Methods and Criteria Relating to Class 4, Test N.1: Test Method for Readily Combustible Solids. The scope of the laboratory’s accreditation (ISO/IEC 17025:2017) includes DOT 4.1 Ignitability and Burn Rate. 

Among 15 samples, one sample with a reported particle size of 1.02 µm met the CLP Cat 2 criteria, collectively, the weight of evidence indicates that tungsten carbide powders greater or equal to 0.58 µm in size are not Flammable Solids.

The situation with powders and particle sizes equal to or less than 0.52 microns is inconclusive.

Related composition

Related composition:
tungsten carbide

Classificationopen allclose all

Explosives
Reason for no classification:
data conclusive but not sufficient for classification
Flammable gases and chemically unstable gases
Reason for no classification:
data conclusive but not sufficient for classification
Aerosols
Reason for no classification:
data conclusive but not sufficient for classification
Reason for no classification:
hazard class not assessed
Oxidising gases
Reason for no classification:
data conclusive but not sufficient for classification
Gases under pressure
Reason for no classification:
data conclusive but not sufficient for classification
Flammable liquids
Reason for no classification:
data conclusive but not sufficient for classification
Flammable solids
Reason for no classification:
data conclusive but not sufficient for classification
Self-reactive substances and mixtures
Reason for no classification:
data conclusive but not sufficient for classification
Pyrophoric liquids
Reason for no classification:
data conclusive but not sufficient for classification
Pyrophoric solids
Reason for no classification:
data conclusive but not sufficient for classification
Self-heating substances and mixtures
Reason for no classification:
data conclusive but not sufficient for classification
Substances and mixtures which in contact with water emit flammable gases
Reason for no classification:
data conclusive but not sufficient for classification
Oxidising liquids
Reason for no classification:
data conclusive but not sufficient for classification
Oxidising solids
Reason for no classification:
data conclusive but not sufficient for classification
Organic peroxides
Reason for no classification:
data conclusive but not sufficient for classification
Corrosive to metals
Reason for no classification:
data conclusive but not sufficient for classification
Desensitized explosives
Reason for no classification:
data lacking
Acute toxicity - oral
Reason for no classification:
data conclusive but not sufficient for classification
Acute toxicity - dermal
Reason for no classification:
data conclusive but not sufficient for classification
Acute toxicity - inhalation
Reason for no classification:
data conclusive but not sufficient for classification
Skin corrosion / irritation
Reason for no classification:
data conclusive but not sufficient for classification
Serious eye damage / eye irritation
Reason for no classification:
data conclusive but not sufficient for classification
Respiratory sensitisation
Reason for no classification:
data lacking
Skin sensitisation
Reason for no classification:
data conclusive but not sufficient for classification
Aspiration hazard
Reason for no classification:
data conclusive but not sufficient for classification
Reproductive toxicity
Reason for no classification:
data conclusive but not sufficient for classification
Effects on or via lactation
Reason for no classification:
data lacking
Germ cell mutagenicity
Reason for no classification:
data conclusive but not sufficient for classification
Carcinogenicity
Reason for no classification:
data lacking
1. Specific target organ toxicity - single (STOT-SE)
Reason for no classification:
data conclusive but not sufficient for classification
1. Specific target organ toxicity - repeated (STOT-RE)
Reason for no classification:
data conclusive but not sufficient for classification
Hazardous to the aquatic environment (acute / short-term)
Reason for no classification:
data conclusive but not sufficient for classification
Hazardous to the aquatic environment (long-term)
Reason for no classification:
data conclusive but not sufficient for classification
Hazardous to the ozone layer
Reason for no classification:
data conclusive but not sufficient for classification

Labelling

Signal word:
No signal word

Notes

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