The chemical formula of xylan is (CfiveHeightOfour)n, is a kind ofPlant cell wallThe heteropolysaccharide in, accounting for about 15%~35% of the dry weight of plant cells, is a planthemicelluloseThe main component of is a complex polypentasaccharide.
Appearance and property: white amorphous powder[1]
Melting point/freezing point (° C): 2 ° C (lit.)
Boiling point, initial boiling point and boiling range (° C): 163 ° C/8mm Hg (lit.)
Flash point (° C): 163 ° C (lit.)
Stability reactivity
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stability
The product is stable when stored and used at normal ambient temperature.[2]
Avoid contact conditions
Electrostatic discharge, heat, humidity, etc.
Contraband
Strong oxide, strong acid, strong base.
First aid measures
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1. Inhalation: If inhaled, move the patient to fresh air.
2. Skin contact: Take off the contaminated clothes and wash the skin thoroughly with soapy water and clean water.If you feel unwell, seek medical advice.
3. Eye contact: separate the eyelids and use flowing water ornormal salinerinse.Get medical attention immediately.
4. Ingestion: Rinse mouth, do not induce vomiting.Get medical attention immediately.
5. Advice for protecting the rescuer: transfer the patient to a safe place.Consult a doctor.Show this chemical safety data sheet to the doctor on site.[2]
2. Avoid using direct water to extinguish the fire. Direct water may cause splashing of flammable liquid and spread the fire.
matters needing attention
1. Firefighters must wear breathing apparatus and full body fire-fighting clothes to extinguish the fire in the upwind direction.
2. Move the container from the fire site to an open place as far as possible.
3. If the container in the fire site has changed color or sounds from the safety relief device, it must be evacuated immediately.
4. Isolate the accident site and prohibit irrelevant personnel from entering.Receive and treat fire water to prevent environmental pollution.[2]
Leakage treatment
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Operators
Protective measures, protective equipment and emergency disposal procedures
1. It is recommended that emergency personnel wear breathing apparatusAnti static clothingWear rubber oil resistant gloves.
2. Do not touch or cross the leakage.
3. All equipment used in operation shall be grounded.
4. Cut off the leakage source as much as possible.
5. Eliminate all ignition sources.
6. The warning area shall be demarcated according to the influence area of liquid flow, steam or dust diffusion, and irrelevant personnel shall evacuate from crosswind and upwind to the safety area.
environmental protection
Collect leakage to avoid environmental pollution.Prevent leakage into sewers, surface water and groundwater.
Accommodation method
1. Small amount of leakage: collect the leaked liquid in a sealable container as far as possible.Absorb with sand, activated carbon or other inert materials and transfer to a safe place.Do not flush into the sewer.
2. Large amount of leakage: build a dike or dig a pit to receive.Close the drainage pipe.Cover with foam to inhibit evaporation.Use explosion-proof pump to transfer to tank car or special collector for recycling or transport to waste disposal site.[2]
Disposal and storage
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Operational matters
1. The operators shall be specially trained and strictly abide by the operating procedures.
2. Operation and disposal shall be carried out in places with local ventilation or general ventilation facilities.
3. Avoid eye and skin contact and inhalation of vapor.
4. Keep away from kindling and heat sources, and smoking is strictly prohibited in the workplace.
5. Use explosion-proof ventilation systems and equipment.
6. If canning is required, the flow rate shall be controlled, and grounding device shall be provided to prevent electrostatic accumulation.
7. Avoid contact with forbidden compounds such as oxidants (see Part 10 for forbidden compounds).
8. Load and unload gently during transportation to prevent damage to packaging and containers.
9. Empty containers may leave harmful substances.
10. Wash your hands after use, and do not eat or drink in the workplace.
11. Fire fighting equipment and leakage emergency treatment equipment of corresponding types and quantities shall be provided.[2]
Storage items
1. Store in a cool and ventilated warehouse.
2. The storage temperature should not exceed 37 ° C.
3. It should be stored separately from oxidants and edible chemicals, and should not be mixed (see Part 10 for prohibited substances).
4. Keep container sealed.
5. Keep away from kindling and heat sources.
6. Lightning protection equipment must be installed in the warehouse.
7. The exhaust system shall be equipped with a grounding device to conduct static electricity.
8. Explosion proof lighting and ventilation shall be adopted.
9. It is prohibited to use equipment and tools that are easy to generate sparks.
10. The storage area shall be equipped with leakage emergency treatment equipment and appropriate materials.[2]
Contact control
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/Individual protection
engineering control
1. It is recommended to separate the workplace from other workplaces.
2. Closed operation to prevent leakage.
3. Strengthen ventilation.
4. Automatic alarm device and emergency ventilation facilities shall be set.
5. Emergency evacuation passageway and necessary danger area shall be set up.
6. Set up red zone warning lines, warning signs and warning instructions in Chinese, and set up a communication alarm system.
7. Provide safety shower and eyewash equipment.
Personal protective equipment
1. Respiratory system protection: wear when the concentration in the air exceeds the standardFilter gas mask(Half mask).When rescuing or evacuating in an emergency, a portable respirator should be worn.
2. Hand protection: wear rubber oil resistant gloves.
3. Eye protection: wear chemical safety protection eyes.
4. Skin and body protection: wear work clothes to prevent poison penetration.[2]
Waste disposal
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Waste chemicals
Recycle as much as possible.If it cannot be recycled, incineration method shall be adopted for disposal.Do not dispose of this product by discharging it into the sewer.
Contaminated packaging
Return the container to the manufacturer or dispose of it according to national and local regulations.
Disposal precautions
Refer to relevant national and local regulations before disposal.[2]
Transportation precautions
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1. Transport vehicles shall be equipped with fire-fighting equipment and leakage emergency treatment equipment of corresponding types and quantities.
2. It is strictly prohibited to mix with oxidants, edible chemicals, etc.
3. The exhaust pipe of the vehicle transporting this article must be equipped with fire arresting device.
4. When tank (tank) trucks are used for transportation, there should be grounding chains, and hole partitions can be set in the tank to reduce static electricity generated by vibration.
5. It is prohibited to use mechanical equipment and tools that are easy to generate sparks for loading and unloading.
6. It is better to transport in the morning and evening in summer.
7. During transportation, it shall be protected from sun exposure, rain and high temperature.
8. Keep away from kindling, heat source and high temperature area during stopover.
9. Road transportation shall be carried out according to the specified route, and do not stay in residential areas and densely populated areas.
10. It is forbidden to slip during railway transportation.
11. It is strictly prohibited to transport in bulk by wooden boat or cement boat.
12. Danger signs and announcements shall be posted on the means of transport according to relevant transport requirements.[2]
