The Ammonium iron(III) oxalate trihydrate, with the CAS registry number 13268-42-3, is also known as Ammonium iron(III) oxalate trihydrate trihydrate. It belongs to the product category of Industrial/Fine Chemicals. Its EINECS registry number is 220-952-2. This chemical's molecular formula is C₂H₂O₄·1/3Fe·H₃N·H₂O and molecular weight is 142.69. What's more, its systematic name is called Ammonium hydrogen ethanedioate - iron hydrate (3:3:1:3). It should be stored in a cool, dry and well-ventilated place. This chemical can be prepared by Fe₂(SO₄)₃, BaC₂O₄ and (NH₄)₂C₂O₄.

Physical properties about Ammonium iron(III) oxalate trihydrate are: (1)#H bond acceptors: 18; (2)#H bond donors: 21; (3)#Freely Rotating Bonds: 3; (4)Polar Surface Area: 226.98 Å². 

When you are dealing with this chemical, you should be very careful. This chemical may destroy living tissue on contact and may cause burns. It is irritating to respiratory system. Therefore, you should keep container tightly closed and you can not breathe the gas/fumes/vapour/spray. You should avoid contacting with skin and eyes and wear suitable protective clothing, gloves and eye/face protection. In case of contacting with eyes, you must rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1) SMILES: [Fe].O=C(O)C([O-])=O.[O-]C(=O)C(=O)O.[O-]C(=O)C(=O)O.O.O.O.[NH4+].[NH4+].[NH4+]
(2) InChI: InChI=1S/3C2H2O4.Fe.3H3N.3H2O/c3*3-1(4)2(5)6;;;;;;;/h3*(H,3,4)(H,5,6);;3*1H3;3*1H2
(3) InChIKey: XLDOWRCPANHVAW-UHFFFAOYSA-N