13268-42-3

Basic information

• Product Name: Ferric ammonium oxalate trihydrate
• Synonyms: Ferric ammonium oxalate trihydrate;Ammonium ferric oxalate, Iron ammonium oxalate;AMMONIUM IRON(III) OXALATE TRIHYDRATE, 98%, PURE;Ammonium iron(III) oxalate trihydrate, pure;Ferric ammonium oxal;AMMoniuM iron(III) oxalate trihydrate >=98%;Ammonium Ferric(III) oxalate trihydrate;Ammonium iron oxalate trihydrate
• CAS NO: 13268-42-3
• Molecular Formula: 2C₂O₄*Fe*3H₂O*2H₄N
• Molecular Weight: 303.97
• EINECS: 220-952-2
• Product Categories: Building Blocks;Carbonyl Compounds;Carboxylic Acid Salts;Chemical Synthesis;Organic Building Blocks;Industrial/Fine Chemicals
• Mol File: 13268-42-3.mol
• Article Data: 0

Chemical Properties

• Melting Point: 161°C (rough estimate)
• Appearance: Green/Crystalline Powder
• Density: 1,78 g/cm3
• Water Solubility: Very soluble in water. Insoluble in alcohol
• Sensitive: Light Sensitive & Hygroscopic
• Stability: May decompose upon exposure to light. Incompatible with strong acids, strong oxidizing agents. Hygroscopic.
• Merck: 14,517
• CAS DataBase Reference: Ferric ammonium oxalate trihydrate(CAS DataBase Reference)
• NIST Chemistry Reference: Ferric ammonium oxalate trihydrate(13268-42-3)
• EPA Substance Registry System: Ferric ammonium oxalate trihydrate(13268-42-3)

Safety Data

• Hazard Codes: C,Xn
• Statements: 21/22-34
• Safety Statements: 26-27-36/37/39-45-25-24/25
• RIDADR: 3288
• WGK Germany: 1
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 13268-42-3(Hazardous Substances Data)

Usage

Chemical Properties

Ferric ammonium oxalate is a green crystalline, solid with a granular or salt-like appearance. Color depends on level of iron present

Uses

Ammonium iron(III) oxalate trihydrate is used in the preparation of Langmuir-Blodgett magnetic thin films. It is also involved in the production of blueprint paper.

General Description

Ammonium ferric oxalate trihydrate decomposes completely at 275°C giving Fe2O3 and has been investigated by thermogravimetry and differential thermal analysis.

Potential Exposure

Ferric ammonium oxalate is used in photography and making blueprints

Shipping

UN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required

Purification Methods

Crystallise it from hot water (0.5mL/g). [Beilstein 3 III 1103.]

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Strong oxidizers may cause release of toxic phosphorus oxides. Organophosphates, in the presence of strong reducing agents such as hydrides, may form highly toxic and flammable phosphine gas. Keep away from alkaline materials.

InChI:InChI=1/3C2H2O4.Fe.3H3N.3H2O/c3*3-1(4)2(5)6;;;;;;;/h3*(H,3,4)(H,5,6);;3*1H3;3*1H2

Synthetic route

ammonium oxalate (1113-38-8) → ammonium iron(II) oxalate*3H2O (13268-42-3)

Conditions	Yield
With carbonic-acid; iron(II) oxalate

ammonium oxalate + iron(II) oxalate (15843-42-2) → ammonium iron(II) oxalate*3H2O (13268-42-3)

Conditions	Yield
in CO2 stream;
in CO2 stream;

Upstream product

• 1113-38-8 ammonium oxalate 
• 15843-42-2 iron(II) oxalate