OP-4 octylphenol polyoxyethylene ether belongs to the alkylphenol polyoxyethylene ether (APEO) class of non-ionic surfactants. According to the safety instructions in the Guoli Chemical product database, this product is clearly marked with H410 hazard statement – "Very toxic to aquatic life with long-lasting effects," and it is expressly stipulated that "the product must not be discharged directly into water bodies, and waste must be disposed of by qualified institutions." This indicates that the product itself has significant environmental hazard characteristics in terms of aquatic ecotoxicity and is not an environmentally friendly product.
From the perspective of international environmental regulations, APEO substances (including octylphenol polyoxyethylene ether and its degradation product octylphenol) have been included in the key control scope of many international regulations. The EU REACH regulation lists octylphenol as a Substance of Very High Concern (SVHC) because of its endocrine-disrupting properties and environmental persistence; industry standards such as OEKO-TEX Standard 100 and ZDHC (Zero Discharge of Hazardous Chemicals) also set strict limits on APEO residues in textiles. Therefore, in downstream applications, especially in export-oriented industries such as textiles and leather, the environmental compliance risks need to be fully assessed.
| Environment-related Parameter | Data | Source |
|---|---|---|
| Aquatic Toxicity Classification | H410 (Very toxic to aquatic life with long-lasting effects) | Guoli Chemical Product Database |
| Acute Toxicity (Oral LD₅₀ in Rats) | >2000 mg/kg (Low toxicity) | Guoli Chemical Product Database |
| Biodegradability | No test data available | — |
| Environmental Hormone/Endocrine Disrupting Potential | No test data available (but the degradation product octylphenol is known to have endocrine-disrupting properties) | — |
| APEO Residue Test Report | Not available | — |
| RoHS/REACH Compliance Test | Not available | — |
OP-4 still has important industrial applications in pesticide emulsification, oil extraction, industrial cleaning, etc., but it is recommended that users conduct compliance assessments based on their specific application scenarios and target markets: