Industrial chemicals · Taylor, TXTechnical Data Sheet
Potassium Dichromate - Technical Grade
Technical
- CAS number
- 7778-50-9
- UN number
- UN3288
- Hazard class · packing group
- 6.1 · PG III
- Structure
Structure · PubChem - Grade
- Technical
- Signal word
- Danger
- Hazards
- Proper shipping name
- Toxic solid, inorganic, n.o.s. (Potassium dichromate)
Identity & Composition
- Product Name
- Potassium Dichromate - Technical Grade
- Alliance Code
- potassium-dichromate-sodium-bichromate-technical-grade
- Grade
- Technical
- Concentration
- —
- CAS Number
- 7778-50-9PubChem
- Formula
- Cr2K2O7Adjudicated
- Molecular Weight
- 294.18PubChem
- Product Type
- Pure substance
Specifications
Not yet characterized — Specification limits for this product have not been published yet. Contact Technical Services for the current specification and available lot-specific documentation.
Physical & Chemical Properties
One or more physical-property values are temporarily suppressed pending verification against vendor COA data. For complete properties refer to the Safety Data Sheet (SDS) or contact sales@alliancechemical.com.
| Property | Value | Source |
|---|---|---|
| Appearance | Orange-red crystalline powder | Adjudicated |
| Form | Solid | Published reference |
| Odor | Odorless, no distinctive odor | Published reference |
| Density | 2.676 at 77 °F (USCG, 1999) - Denser than water; will sink | Published reference |
| Boiling Point | Decomposes at 932 °F (NTP, 1992) | Adjudicated |
| Melting Point | 748 °F (NTP, 1992) | Adjudicated |
| Flash Point | N/A | Published reference |
| Solubility (water) | 10 to 50 mg/mL at 68 °F (NTP, 1992) | Published reference |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN3288Adjudicated
- Hazard Class
- 6.1Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Toxic solid, inorganic, n.o.s. (Potassium dichromate)Adjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H272, H301, H312, H314, H317, H330, H334, H340, H350, H360FD, H372, H400, H410Adjudicated
- P-Codes (Precautionary Statements)
- P201, P202, P210, P220, P233, P260, P261, P264, P270, P271, P272, P273, P280, P284, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P313, P314, P320, P321, P330, P333+P313, P342+P311, P362, P363, P370+P378, P391, P403, P403+P233, P405, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 0.005 mg/m³ TWA (as Cr(VI)); action level 0.0025 mg/m³ — 29 CFR 1910.1026Adjudicated
- ACGIH TLV
- 0.0002 mg/m³ TWA; 0.0005 mg/m³ STEL (inhalable, as Cr(VI))Adjudicated
- NIOSH REL
- Ca — 0.0002 mg/m³ TWA (as Cr(VI))Adjudicated
- NIOSH IDLH
- 15 mg/m³ (as Cr(VI))Adjudicated
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.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Potassium Dichromate - Technical Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Application Guidance
Potassium Dichromate - Technical Grade (Technical) application guidance is available on request. Contact Alliance Chemical Technical Services for grade-specific use recommendations.
Storage & Handling
- Recommended Storage
- Keep containers tightly closed in a cool, dry, well-ventilated place, locked up, away from combustible materials, heat, ignition sources and incompatible materials; protect from moisture. Handle in a fume hood or closed system and minimize dust.Adjudicated
- Handling Precautions
- Use standard chemical PPE — splash goggles, gloves, lab coat. Refer to SDS for hazard-specific PPE requirements.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Combustible and organic materials; strong reducing agents; powdered metals; acids; bases; hydrazine; hydrocarbons; acid anhydrides.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)
UN3288, Toxic solid, inorganic, n.o.s. (Potassium dichromate), 6.1, 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 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.7 | 2026-10-08 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.6 | 2026-09-30 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-09-28 | Canonical data updated: 10 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-08-12 | Canonical data updated: 5 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-07-22 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-17 | Canonical data updated: 5 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 5 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.