Before using XPO-4, three core aspects must be focused on: eye protection, process condition control, and environmental emission compliance, to ensure safe operation and optimal dyeing results.
Detailed Explanation
XPO-4 (glycerol polyoxyethylene ether oleate), as a nonionic surfactant-type high-temperature leveling agent, has low acute oral toxicity (LD₅₀ > 5000 mg/kg), but its eye irritation cannot be ignored — it is classified as GHS Category 2 for serious eye damage/eye irritation (H319). Safety goggles or face shields must be worn throughout operation. In case of eye contact, immediately rinse with running water or saline for at least 15 minutes and seek medical attention as soon as possible; this is the most critical safety red line during use.
In terms of dyeing process application, the excellent performance of XPO-4 depends on proper usage. This product is a light yellow to yellow transparent viscous liquid at room temperature and should be evenly added before the dye bath temperature rises, utilizing its excellent retarding and migrating properties to control the dyeing rate of disperse dyes. Its high-temperature stability ensures no demulsification or stratification under high-temperature and high-pressure conditions around 130°C. However, it is important to note that storage temperature should be controlled within the range of 5°C to 40°C, avoiding freezing or long-term high-temperature storage that may lead to performance degradation.
In terms of environmental compliance, XPO-4 is harmful to aquatic life (H402, Acute Aquatic Toxicity Category 3). Although its biodegradation rate exceeds 70% (OECD 301B method), making it readily biodegradable, it is strictly prohibited to directly discharge dyeing residual liquor containing this product or untreated waste into sewers, soil, or surface water bodies. Enterprises should implement corresponding wastewater treatment measures to ensure discharge compliance.
Technical Parameters
| Parameter Item | Value/Description |
|---|
| Appearance | Light yellow to yellow transparent viscous liquid |
| Ionic Type | Nonionic surfactant |
| Acute Oral Toxicity LD₅₀ | > 5000 mg/kg (rat), low toxicity |
| Eye Irritation Classification | Category 2 (H319 — Causes serious eye irritation) |
| Aquatic Toxicity Classification | Category 3 (H402 — Harmful to aquatic life) |
| Acute Fish Toxicity EC₅₀ | > 100 mg/L |
| Flash Point | > 150°C, non-flammable liquid |
| Biodegradation Rate | > 70% (OECD 301B), readily biodegradable |
| Storage Temperature | 5°C ~ 40°C |
| Explosiveness/Oxidizing Properties | None |
Application Recommendations
- Recommended Dosage: When used as a leveling agent for polyester high-temperature and high-pressure dyeing, the recommended dosage is generally 0.5~2 g/L of the dye bath (the specific dosage should be determined through experiments based on dye concentration, dyeing depth, and equipment conditions).
- Addition Method: Add it during the preparation of the dye bath, either before or simultaneously with the dye, and stir thoroughly to ensure uniform dispersion in the dye bath before introducing the fabric.
- Process Compatibility: This product has excellent resistance to acid, alkali, and hard water, and can perform stably under conventional dyeing pH ranges (typically weak acidic conditions of 4.5~5.5) and water with varying hardness.
- Combination Use: It can be used in combination with other dyeing auxiliaries such as dispersants and chelating agents. However, it is recommended to conduct small-scale compatibility tests before batch production to confirm no adverse reactions.
Precautions
- Eye protection is the primary safety measure: Safety goggles or face shields must be worn during operation; this is a mandatory requirement based on the clear eye irritation hazard (H319) of this product.
- Ventilation and Respiratory Protection: Operate in a well-ventilated area; if ventilation is insufficient or mist may be generated, wear appropriate respiratory protective equipment to avoid prolonged inhalation of vapors or mists.
- Skin Contact: Although no skin irritation is clearly indicated, it is recommended to thoroughly wash the contacted area with soap and water after operation; nitrile rubber or neoprene protective gloves are recommended.
- Do not discharge into the environment: Dyeing residual liquor and cleaning wastewater must be treated through a wastewater treatment system before discharge to prevent harm to aquatic life.
- Storage Segregation: Store separately from incompatible substances such as strong oxidizers, strong acids, and strong bases; keep containers sealed and away from food, beverages, and animal feed.
- Emergency Response Reference: In case of accidental ingestion, do not induce vomiting; immediately rinse the mouth and seek medical attention; in case of leakage, use inert materials such as sand or vermiculite to contain and collect, avoiding flushing into sewers.
- Product has no CAS number: This product currently has no CAS number registration information; please note this when preparing Safety Data Sheets (SDS) or conducting chemical registration.
