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667447

Sigma-Aldrich

Ceramic Etchant A

Synonym(s):

Al2O3 Etch, Aluminum Oxide Etchant, GaN Etch, Gallium Nitride Etchant, Si3N4 Etch, Silicon Nitride Etchant

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About This Item

MDL number:
UNSPSC Code:
12352300
NACRES:
NA.23

Application

Useful for fast and controllable etching of silicon nitride (Si3N4), galium nitride (GaN), or aluminum oxide (Al2O3).

Features and Benefits

Etch Rates @ 180 °C:
Aluminum oxide 120 Å/min
Silicon nitride 125 Å/min
Gallium nitride 80 Å/min
Silicon dioxide 1 Å/min
Silicon 1 Å/min

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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