Industrial chemicals · Taylor, TXTechnical Data Sheet
Ferric Chloride 40% Water Treatment Grade
Reagent · 40%
- CAS number
- 7705-08-0
- UN number
- UN2582
- Hazard class · packing group
- 8 · PG III
- Structure
Structure · PubChem - Grade
- Reagent · 40%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Ferric chloride, solution
Identity & Composition
- Product Name
- Ferric Chloride 40% Water Treatment Grade
- Alliance Code
- ferric-chloride-40
- Grade
- Reagent
- Concentration
- 40%
- CAS Number
- 7705-08-0PubChem
- Formula
- —PubChem
- Molecular Weight
- —PubChem
- Product Type
- Solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (FeCl3) | 38 - 42 % | 40.20 % | — | Interpreted |
| Ferrous chloride (FeCl2) | 2.5 % max | 0.106 % | — | Interpreted |
| Ferrous (as Fe2) | Max 0.5% (w/w) | 0.046% (w/w) | — | Interpreted |
| Iron (Fe, total) | 13.8 ± 0.4 % | 13.8 % | — | Interpreted |
| pH (20 °C) | < 1 | 0.6 | — | Interpreted |
| Sulfate (SO4 2-) | < 0.5 % | 0.070 % | — | Interpreted |
| Free acid (as HCl) | 1.0 % max | 0.41 % | — | Interpreted |
| Total insoluble matter | 0.2 % max | 0.017 % | — | Interpreted |
| Arsenic (As) | Max 3 mg/kg | 0.64 mg/kg | ICP-MS / EPA 200.8 | Interpreted |
| Lead (Pb) | Max 5 mg/kg | 0.63 mg/kg | ICP-MS / EPA 200.8 | Interpreted |
| Mercury (Hg) | Max 0.5 mg/kg | 0.0065 mg/kg | Cold vapour AAS / EPA 245.1 | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade Reagent | 40% | — | current | current |
| Technical | 10% | — | ferric-chloride-10 | View TDS → |
| Technical | — | — | ferric-chloride-20 | View TDS → |
| Technical | — | — | ferric-chloride-30 | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Dark brown liquid | Adjudicated |
| Form | Liquid | Published reference |
| Odor | Slight acidic odor | Adjudicated |
| pH | 1–2 | Adjudicated |
| Specific Gravity | 1.41–1.44 at 20 °C (water = 1) | Adjudicated |
| Density | 1.40-1.43 g/cm³ (40%, 20°C) | Published reference |
| Boiling Point | 100 to 110 °C (212 to 230 °F) (aqueous solution) | Adjudicated |
| Melting Point | < -20 °C | Published reference |
| Flash Point | Not applicable | Adjudicated |
| Vapor Pressure | About 17.5 mmHg at 20 °C (water vapor) | Adjudicated |
| Solubility (water) | Completely miscible with water | Adjudicated |
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| fiberglass tank | Compatible | — | scribd.com |
| plastic tank (type unspecified) | Compatible | — | scribd.com |
| metals (unspecified) | Not recommended | — | thaichloride.com |
| fiberglass | Compatible | — | scribd.com |
| plastic | Compatible | — | scribd.com |
Compatibility is drawn from published manufacturer and supplier documentation for this product; each rating is sourced. Confirm against your specific duty cycle before equipment selection.
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN258249 CFR 172.101
- Hazard Class
- 8Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Ferric chloride, solutionAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H302, H314, H412Adjudicated
- P-Codes (Precautionary Statements)
- P234, P260, P264, P270, P273, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P390, P405, P406, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- 1 mg/m³ TWA (soluble iron salts, as Fe); hydrogen chloride 2 ppm CeilingAdjudicated
- NIOSH REL
- 1 mg/m³ TWA (Fe)Adjudicated
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Health & Fire Hazard
Acute Toxicology
- LD₅₀ Oral (rat)
- 450–900 mg/kg (ferric chloride); product ATE about 455 mg/kgAdjudicated
- LD₅₀ Dermal (rabbit)
- > 2,000 mg/kg (ferric chloride, rat)Adjudicated
Acute toxicology values from SDS Section 11 or NIOSH RTECS.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Ferric Chloride 40% Water Treatment Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Coagulant for water quality improvement, municipal wastewater treatment, and industrial wastewater treatmentthaichloride.com
- Removal of phosphates and heavy metals (lead, cadmium, mercury) from wastewaterthaichloride.com
- Dissolving metals such as copper and zinc (metal etching / pickling)thaichloride.com
- Coagulant for potable water and wastewater treatmentscribd.com
- Municipal and industrial water and wastewater treatment (37-42% ferric chloride solution)corecheminc.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Store in closed polyethylene, fiberglass or rubber-lined containers, never metal. Keep away from bases and metals.Adjudicated
- Handling Precautions
- Standard chemical PPE — dust mask and goggles for handling of fine grades. Avoid generating airborne dust.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Metals, especially copper, aluminum, zinc and mild steel (corrosion and flammable hydrogen); alkalis and bases; strong oxidizers and reducing agents.Adjudicated
- Shelf Life
- Consult Technical Services for product-specific shelf life
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
UN2582, Ferric chloride, solution, 8, PG III
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.8 | 2026-10-07 | Canonical data updated: 20 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.7 | 2026-10-06 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.6 | 2026-10-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-09-30 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-08-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-07-22 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-17 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 7 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.