What are the safety issues for pva?

PVA (polyvinyl alcohol) is a synthetic polymer that is used in a wide variety of applications, including adhesives, paper coatings, and food packaging. While PVA is generally considered to be safe, there are some potential safety issues that should be considered when working with this material.

Inhalation

PVA dust can cause respiratory irritation if inhaled. Symptoms of respiratory irritation may include coughing, sneezing, and shortness of breath. In severe cases, inhalation of PVA dust can lead to lung damage.

Skin contact

PVA can cause skin irritation if it comes into contact with the skin. Symptoms of skin irritation may include redness, swelling, and itching. In severe cases, skin contact with PVA can lead to blisters or burns.

Eye contact

PVA can cause eye irritation if it comes into contact with the eyes. Symptoms of eye irritation may include redness, swelling, and tearing. In severe cases, eye contact with PVA can lead to corneal damage.

Ingestion

PVA is not considered to be toxic if ingested. However, ingestion of large amounts of PVA can cause gastrointestinal problems, such as nausea, vomiting, and diarrhea.

Other safety considerations

In addition to the potential health hazards described above, there are also some other safety considerations that should be taken into account when working with PVA. These include:

* PVA is a flammable material. It should be kept away from sources of heat and ignition.

* PVA is a water-soluble material. It should not be used in applications where it will be exposed to water.

* PVA can be degraded by microorganisms. It should be stored in a cool, dry place to prevent degradation.

Overall, PVA is a safe material to work with when proper safety precautions are taken.