Para-Xylylene Dimer (Parylene Dimer DPX – C)

Para-Xylylene Dimer
(Parylene Dimer DPX – C)
Gaurav Chatterjee
Reviewed by
Faculty Oversight Committee
Key Danger from Chemical
• NFPA 704 standard – 1,1,0
• Hazard Statement:
– Irritation of skin and eyes
due to over-exposure.
– May ignite if exposed to
extreme temperatures.
– Negligible reactivity hazard.
Key Danger from Chemical
• Potential health effects:
– Exposure by inhalation: Inhalation of dust of particulates
may irritate throat and nose. Symptoms are cough and
sore throat. Symptoms generally gone when exposed to
fresh air.
– Exposure by direct skin/eye contact: Prolonged exposure
to skin might cause minor irritation. Contact to eyes may
cause redness. Rinse with water for 15 mins, consult
physician if symptoms persist. Chemical doesn’t get
absorbed through skin.
– Exposure by injection/ingestion: Neither injection nor
ingestion are expected to be standard routes of contact. In
case of contact with open wound, wash with water and
consult physician.
Key Danger from Chemical
• Possibility of hazardous reactions: Not likely. It is a
very stable material.
• Materials to avoid: This chemical will react to strong
oxidising agent, strong acids and strong bases.
• Hazardous decomposition products: When exposed to
extreme temperatures, gases like CO, CO2 and HCL
vapors are potential by-products.
• Signs and Symptoms of exposure: This chemical is a
stable white powdery substance, and symptoms are
expected to arise only on prolonged contact. The
symptoms have already been elaborated.
Fire Safety and accidental release
• Fire safety procedures:
– Flash point: Not applicable
– Auto ignition temperature: Not determined
– Fire extinguishing materials : All are compatible
• Accidental release measures:
– In case of small quantity spill, it can be cleaned
with a mop or damp cloth/sponge to avoid dust.
– Large spills are not expected as amount of
chemical stored wont exceed 1kg.
Handling and Storage
• Care should be taken to avoid dust and direct
contact to skin/eyes.
• Store in a cool, dry place away from sources of
intense heat.
• Store away from incompatible materials – strong
oxidising agents, strong acids and strong bases.
• It is proposed to store this chemical in the bioMEMS lab, Micro-2 area in the chemical storage
area (below fume hood).
Operating procedure and disposal
• Always use gloves to handle.
• Use a spatula to weigh the required amount to
load in furnace and then store the stock bottle in
a cool and dry place.
• This material can be classified as an organic
polymer, and the same disposal policies for
organic polymers can be employed here.
• Duration of experiment: This chemical acts as a
seed material for polymerization, hence is the
basic requirement for a parylene deposition
system. It is expected that this material will be
used indefinitely.
List of authorized users
• Prof. K L Narasimhan
– Email: [email protected]
• Dr. Nidhi Maheshwari
– Email: [email protected]
– Phone: 9833783060
• Gaurav Chatterjee
– Email: [email protected]
– Phone: 9757018250
• Yashwanth Narayan
– Email: [email protected]
– Phone: 9833370853
More users to be added in accordance to existing CEN authorization

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