[Chemical Knowledge]：Specification for storage and transportation of SBS

SBS (Styrene-Butadiene-Styrene) is a common raw material for chemical production. Due to its special chemical properties, it is necessary to strictly comply with safe storage and transportation regulations. This article will detail the physical and chemical properties of SBS, risk overview, first aid measures, fire protection measures, leakage emergency treatment, operation and storage, contact control and personal protection, physical and chemical characteristics, stability and reactivity, etc.

1. physicochemical properties

SBS is a thermoplastic elastomer, with excellent low temperature resistance and impact strength, while both good heat resistance and aging resistance. Its appearance is usually light yellow or Milky White granular, its density is about 0.9-0.95g/cm³, and its melting point is between 100-130 ℃.

2. Hazard Overview

SBS may cause a fire or explosion under certain conditions, is an irritant to the eyes and skin, and may cause respiratory discomfort if inhaled. Long-term exposure may cause damage to the liver and nervous system.

3. first aid measures

1. skin contact: immediately remove contaminated clothing, rinse with plenty of flowing water for at least 15 minutes.
2. Eye contact: Lift the eyelid immediately and rinse thoroughly with plenty of flowing water or normal saline for at least 15 minutes.
3. Inhalation: Quickly leave the scene to the fresh air place to keep the respiratory tract unobstructed. If breathing is difficult, give oxygen; if breathing stops, give artificial respiration immediately.
4. Ingestion: Drink plenty of warm water, induce vomiting, and seek medical attention.

4. fire protection measures

1. Hazardous characteristics: fire or explosion may be caused by open fire and high heat. It is decomposed by high heat to release toxic gases.
2. Harmful combustion products: carbon monoxide, carbon dioxide.
3. Fire extinguishing method: Move the container from the fire to the open place as much as possible. Spray water to keep the fire container cool until the end of the fire. Containers in a fire scene that have discolored or produced sound from the safety pressure relief device must be evacuated immediately. Extinguishing agent: foam, dry powder, carbon dioxide, sand. Fire extinguishing with water is ineffective.
Emergency Treatment
for
5. Leakage
evacuate personnel from the contaminated area to the safety zone, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and protective clothing. Cut off the leak source as much as possible. Prevent from flowing into restricted spaces such as sewers and flood drainage ditches. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. Large leakage: build embankments or dig pits to contain. Cover with foam to reduce steam disasters. Transfer to tank truck or special collector by pump, recycle or transport to waste disposal site.

6. operation Disposal and storage

airtight operation to provide good natural ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear self-priming filtering gas mask (half mask), chemical safety goggles, anti-poison penetration overalls and rubber oil-resistant gloves. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent vapor leakage into the workplace air. Avoid contact with oxidizing agents. Handle lightly to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances. Store in a cool, ventilated warehouse. Keep away from fire and heat source. The warehouse temperature should not exceed 30 ℃. Should be stored separately from the oxidant, do not mix storage. Explosion-proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials.

7. contact control and personal protection

engineering control: closed operation, provide good natural ventilation conditions. Respiratory system protection: when the concentration in the air exceeds the standard, you must wear a self-priming filtering gas mask (half mask). Emergency rescue or evacuation, should wear air respirator. Eye protection: wear chemical safety goggles. Body protection: wear anti-poison penetration overalls. Hand protection: wear rubber oil resistant gloves. Other protection: smoking, eating and drinking are prohibited at the work site. After work, shower and change clothes. Maintain good hygiene habits.

8. physical and chemical properties

appearance and properties: light yellow or Milky White granular solid. PH value: no data relative density (water = 1):0.9-0.95 melting point (℃):100-130 boiling point (℃): no data relative vapor density (air = 1): no data saturated vapor pressure (kPa): no data combustion heat (kJ/mol): no data critical temperature (℃): no data critical pressure (MPa): no data octanol/water partition coefficient: no data flash point (℃): meaningless ignition temperature (℃): no data explosion upper limit%(V/V): no data explosion lower limit%(V/V): no data solubility: insoluble in water, soluble in organic solvents such as benzene and toluene. Main uses: stability for manufacturing rubber products and plastic products: stable forbidden compounds: conditions for strong oxidants to avoid contact: thermal polymerization hazard decomposition products: carbon monoxide and carbon dioxide

9. stability and reactive

stability: stable forbidden substances: conditions for strong oxidants to avoid contact: thermal polymerization hazard decomposition products: carbon monoxide and carbon dioxide polymerization hazard: polymerization hazard is the mixture under specific conditions (