At a Glance
Material Family
Acids & Salts
Record Type
Salt
Primary Role
Chelation / Sequestration
Functional Roles
Industries Served
Applications & Use Cases
- ▸ Corrects lime-induced iron chlorosis in fruit trees, citrus, vines, and ornamentals grown on high-pH calcareous soils where the o,o isomer keeps iron plant-available up to pH 9.
- ▸ Supplied as a water-soluble micronutrient fertilizer for fertigation, drip irrigation, and soil drench application in agriculture and horticulture.
- ▸ Used in hydroponic and soilless growing media nutrient programs to deliver stable chelated iron that resists precipitation in alkaline recirculating solutions.
- ▸ Blended into NPK and micronutrient fertilizer formulations where a strongly stable iron chelate is required to prevent tie-up with phosphate and carbonate.
- ▸ Applied in turf, greenhouse, and nursery operations to maintain foliar greening (chlorophyll synthesis) on susceptible crops without frequent reapplication.
Physical Properties
Appearance
Dark red-brown to reddish-black powder, granules, or microgranules (typical)
Iron Content
6% Fe minimum (typical guaranteed analysis)
Ortho Ortho Isomer
typically 1.8 to 4.8% o,o-EDDHA chelated iron (grade dependent)
Water Solubility
Readily soluble in water (typical)
pH Solution
7 to 9 (1% aqueous solution, typical)
Stability pH Range
Stable from pH 4 to 9 (o,o isomer, typical)
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
Chemical Identity
CAS Number
16455-61-1
Molecular Formula
C18H24FeN2NaO6+
Molecular Weight
443.2 g/mol
IUPAC Name
sodium;ethane-1,2-diamine;bis(2-(2-hydroxyphenyl)acetic acid);iron
PubChem CID
InChI Key
OQYPHXARJHZNOD-UHFFFAOYSA-N
Synonyms & Trade Names
Full Description
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 240-505-5
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.