Transene - Etchants

Electronic Grade Chemicals

High purity chemicals, low sodium, required for high yield processing of semiconductors.

Ammonium Fluoride 40%

Assay (NH₄F)	40.0% ± 1%
pH	7.75 ± 0.25
Residue after ignition(max)	10 PPM

Impurity	Max. PPM
Chlorides (Cl)	4.0
Sulfates (as SO₄)	2.0
Heavy Metals (as Pb)	1.0
Iron (Fe)	1.0
Phosphorus (as PO₄)	1.0
Sodium (Na)	1.0
Arsenic (As)	0.5
Copper (Cu)	0.5
Nickel (Ni)	0.5

Hydrofluoric Acid 49%

Assay (HF)	49% ± 0.25%
Sp. GR. @ 60 °F	1.18 ± 0.005
Residue after ignition(max)	5 PPM
Fluosilicic Acid (H₂SiF₆)	100 PPM

Impurity	Max. PPM
Chlorides (Cl)	5.0
Sulfates (as SO₄)	2.0
Phosphorus (as PO₄)	1.0
Heavy Metals (as Pb)	0.5
Iron (Fe)	0.5
Sodium (Na)	0.5
Copper (Cu)	0.1
Lead (Pb)	0.1
Nickel (Ni)	0.1
Arsenic (As)	0.05

Nitric Acid 70%

Assay ( HNO₃)	70% ± 1%
Sp. Gr. @ 60 °F	1.420 ± 0.004
Residue after ignition(max)	4 PPM
Impurity	Max. PPM
Chlorides (Cl)	0.1
Sulfates (as SO₄)	1.0
Heavy Metals (as Pb)	0.1
Arsenic (As)	0.005
Iron (Fe)	0.2
Copper (Cu)	0.05
Nickel (Ni)	0.05
Chromium (Cr)	0.1

Acetic Acid Glacial

Assay (CH₃COOH)	99.7% minimum
Residue after evaporation(max)	10 PPM
Impurity	Max. PPM
Chlorides (Cl)	1.0
Sulfates (as SO₄)	1.0
Heavy Metals (as Pb)	0.5
Iron (Fe)	0.2
Copper (Cu)	0.1
Nickel (Ni)	0.1