Search through
Ammonium hydroxide

Ammonium hydroxide

CAS Number: 1336-21-6

Molecular Formula: NH4OH

CorrosiveCorrosive
Environmental HazardEnvironmental Hazard
UN Number (Anhydrous): UN 1005High-purity aqueous ammonia

About Ammonium hydroxide

Ammonium hydroxide (CAS No: 1336-21-6) is a vital inorganic reagent that holds a critical position in the advanced materials and semiconductor manufacturing industries, primarily valued for its role as an ultra-pure wet processing chemical essential for wafer surface cleaning, oxide etching, and photolithography sequen...

Synonyms

  • Ammonia solution
  • Aqua ammonia
  • Aqueous ammonia
  • ammonium hydrate
  • Buffer Solution
View all

Ammonium hydroxide Specifications

CAS Number
1336-21-6
Molecular Formula
NH4OH
Molecular Weight
35.05 g/mol
IUPAC Name
ammonium hydroxide
Canonical SMILES
[NH4+].[OH-]
InChI Key
VHUUQVKOLVNVRT-UHFFFAOYSA-N
InChI
InChI=1S/H3N.H2O/h1H3;1H2
PubChem CID
14923
ChEBI ID
CHEBI:18219
DSSTox Substance ID
DTXSID4020080
EINECS Number
215-647-6
UN Number
2672
MDL Number
MFCD00066650
HSN No
28259050
Molecular Weight
35.05 g/mol
Boiling Point (Experimental)
38°C
Density (Experimental)
~0.90 g/cm³ (approx) Temp: 25 °C
pKa (Experimental)
9.24
Precautionary Statement Codes
P260, P261, P264, P271, P273, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P391, P403+P233, P405, and P501
Hazard Classes and Categories
Acute Tox. 4 (100%) Skin Corr. 1B (100%)

Agricultural Industry

An essential source of nitrogen used primarily in liquid fertilizers and soil amendment applications to support crop cultivation

Household Cleaning Industry

A key ingredient used in glass, surface, and floor cleaning formulations due to its ability to dissolve grease without leaving residue

Water Treatment Industry

A primary chemical agent used in chloramination for secondary disinfection and wastewater pH regulation

Chemical Manufacturing

A versatile reactant and pH adjuster used in the synthesis of nitrogen-containing organic compounds, plastics, and pharmaceuticals

Semiconductors & Nanoelectronics

A high-purity aqueous ammonia-ammonium hydroxide-hydrogen peroxide-water mixture, also known as the SC-1 cleaning solution. Preferred to remove organic contaminants and light particles from silicon wafers without damaging nanometer-scale features

Nanoparticle Synthesis

A precipitating agent and weak base in the bottom-up synthesis of advanced nanomaterials, like synthesizing magnetite (Fe₃O₄) nanoparticles via chemical co-precipitation

Advanced Ceramics & Catalysts

A pH regulator in sol-gel processing, allowing scientists to control the gelation and porosity of advanced ceramic materials and catalysts

Solar Cells & Display Technologies

A precision texturing and microscopic etching of thin-film substrates, semiconductors, and specialised ceramics to optimise light trapping and electrical performance

  1. Ammonia solution
  2. Aqua ammonia
  3. Aqueous ammonia
  4. ammonium hydrate
  5. Buffer Solution

Ammonium hydroxide FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

Rounded Top

Explore Advanced Materials Portfolio

Epoxy Resins

CAS No : 25068-38-6

Epoxy Resins

Category : Industrial Polymers, Semiconductors & Electronic Chemicals

Sub-Category : Reactive Epoxy Binders & Diluents, Substrates, CMP Slurries & Polymers

Description : Epoxy Resin portfolio encompasses a multirange of molecular weights and modifications, from low-visc...

View Product
Tetrakis(ethylmethylamino)hafnium(IV) (TEMAH)

CAS No : 352535-01-4

Category : Semiconductors & Electronic Chemicals

Sub-Category : Organometallic ALD/CVD Precursors

Description : Driven by the continuous scaling of semiconductor process nodes and the surging demand for artificia...

View Product
Potassium hydroxide

CAS No : 1310-58-3

Potassium hydroxide

Category : Solar & Photovoltaic Chemicals

Sub-Category : Wet Processing Acids & Bases

Description : Potassium hydroxide (CAS No: 1310-58-3) serves as a critical inorganic alkaline building block acros...

View Product
Cobalt Sulphate

CAS No : 10124-43-3

Cobalt Sulphate

Category : Battery & Energy Storage Materials

Sub-Category : Cathode Active Materials & Precursors

Description : Sulfuric acid, cobalt salt (CAS No: 10124-43-3) is experiencing a structural surge in demand within ...

View Product