Emulsifier A-105 (nonylphenol polyoxyethylene ether) is a nonionic surfactant. Although its acute oral toxicity is low (LD₅₀ >2000 mg/kg), there are still safety risks that cannot be ignored during use. Among them, the most concerning hazard is to the eyes — this product can cause severe eye irritation or even corneal damage. In case of contact, immediately rinse with running water or saline for 15-20 minutes and seek medical attention promptly. Skin contact causes mild irritation, but repeated or prolonged exposure may cause discomfort. It is recommended to wear chemical safety goggles and impermeable gloves throughout the operation.
From an ecological safety perspective, this product is significantly toxic to aquatic organisms (fish LC₅₀ is 1-10 mg/L, daphnia EC₅₀ is 1-10 mg/L) and degrades slowly, potentially persisting in aquatic environments. Therefore, it is strictly prohibited to discharge waste liquid containing this product directly into drains or natural waters. The washing water and container residues after use should be properly disposed of as hazardous waste in accordance with local environmental regulations.
Regarding the operating environment, use the product in a well-ventilated area, maintain local exhaust or general ventilation, and avoid inhaling vapors or mists. Do not eat, drink, or smoke during operation. After operation, thoroughly wash hands and exposed skin. Additionally, the product has a flash point (closed cup) of greater than 150°C, so it is not flammable. However, when heated or burned, it may release irritating and toxic fumes. Store away from heat sources, sparks, and open flames, with a recommended storage temperature not exceeding 40°C.
| Protection Area | Risk Level | Protective Measures |
|---|---|---|
| Eyes | Severe irritation/corneal damage | Must wear chemical safety goggles; do not operate with bare eyes |
| Skin | Mild irritation | Wear impermeable gloves and protective clothing; avoid prolonged contact |
| Respiratory system | Vapor/mist irritation | Maintain ventilation; wear respiratory protection if necessary |
| Environment | Toxicity to aquatic organisms | Do not discharge into water bodies; dispose of waste liquid as hazardous waste |
Eye contact (most urgent): Immediately open eyelids and rinse slowly with running water or saline for 15-20 minutes. Do not rub eyes. Seek medical attention promptly and inform the doctor of the risk of corneal damage.
Skin contact: Remove contaminated clothing and rinse with plenty of soapy water and clean water for at least 15 minutes. If irritation persists, seek medical treatment.
Inhalation: Move the person to fresh air and keep the airway clear. If respiratory distress occurs, administer oxygen and seek medical attention immediately.
Ingestion: Do not induce vomiting. Rinse the mouth immediately and drink 1-2 glasses of water. If the patient is unconscious, do not give anything by mouth; seek medical attention promptly.
Leak handling: Eliminate all ignition sources. Use inert absorbent material (such as sand, vermiculite) to contain and collect the leaked liquid, avoiding entry into drains or water bodies, and dispose of as hazardous waste in accordance with regulations.