According to the product safety data from Guoli Chemical, the environmental characteristics of polypropylene glycol PPG-400 have two sides. On one hand, its acute toxicity is low, with an oral LD₅₀ in rats > 2000 mg/kg, making it a low-toxicity substance; its toxicity to aquatic organisms is also low—the L(E)C₅₀ values for fish, daphnia, and algae are all > 100 mg/L, indicating that under normal use and minor leakage conditions, it poses little immediate harm to aquatic ecosystems. The product also meets stringent safety requirements in personal care and pharmaceutical fields, with negative results in skin irritation and sensitization tests.
On the other hand, according to OECD 301B test standards, the biodegradation rate of PPG-400 within 28 days is ≤20%, which does not qualify it as "readily biodegradable" or "rapidly biodegradable". This means that if large amounts enter environmental water bodies or soil, its natural degradation rate is slow, potentially causing long-term accumulation. Therefore, in enterprise wastewater discharge and waste disposal, it must be managed according to regulations, and it must not be directly discharged into sewers or surface waters.
| Assessment Item | Data/Conclusion | Reference Standard |
|---|---|---|
| Acute Oral Toxicity | LD₅₀ > 2000 mg/kg (Low toxicity) | OECD 401/420 |
| Skin Irritation | Non-irritating (New Zealand White Rabbit test) | OECD 404 |
| Eye Irritation | Slight, transient irritation (recovery within 24h, Draize score ≤2) | OECD 405 |
| Sensitization | Non-sensitizing (Guinea pig Buehler test negative) | OECD 406 |
| Fish Acute Toxicity | LC₅₀ > 100 mg/L (Low toxicity) | OECD 203 |
| Daphnia Acute Toxicity | EC₅₀ > 100 mg/L (Low toxicity) | OECD 202 |
| Algal Toxicity | EC₅₀ > 100 mg/L (Low toxicity) | OECD 201 |
| 28-day Biodegradation Rate | ≤ 20% (Slow degradation) | OECD 301B |
| Flash Point (Closed Cup) | Approx. 220–230°C | — |
Based on the above environmental characteristics, PPG-400 has good environmental safety in the following application scenarios:
Guoli Chemical has a complete product quality testing system and safety management system. Under normal circumstances, the following testing and compliance documents can be provided:
To obtain specific formal test report documents, it is recommended to directly contact Guoli Chemical's sales or technical support department, specifying the required report type (e.g., SDS, COA, REACH compliance declaration, etc.). We will provide the corresponding formal documents based on your specific application and local regulatory requirements.