Industrial chemicals · Taylor, TXTechnical Data Sheet
Technical Data Sheet
Sodium Dichromate Technical Grade
- CAS番号
- 7789-12-0
- UN番号
- UN3288
- 危険有害性クラス・容器等級
- 6.1 · PG III
- 構造
構造・PubChem - 注意喚起語
- Danger
- 危険有害性
- 正式輸送品名
- Toxic solid, inorganic, n.o.s. (Sodium dichromate dihydrate)
Last reviewed 2026-06-29 by Andre Taki, Chief Commercial Officer.
Identity & Composition
- 製品名
- Sodium Dichromate Technical Grade
- Alliance Code
- sodium-dichromate-dihydrate
- グレード
- —
- 濃度
- —
- CAS番号
- 7789-12-0Adjudicated
- 化学式
- Cr2H4Na2O9Adjudicated
- 分子量
- 298.00PubChem
- 製品種別
- Pure substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (as Na2Cr2O7·2H2O) | 99.0% mass min | 99.7% mass | — | Interpreted |
| Chloride (as Cl) | 0.05% mass max | 0.0035% mass | — | Interpreted |
| Insoluble matter | 0.2 % by Weight maximum | 0.013 % by Weight | Methods and procedures described in "Reagent Chemicals", American Chemical Society (ACS) Specifications | Interpreted |
| Iron (as Fe) | 30 ppm max | 4.3 ppm | — | Interpreted |
| Sulphate (as SO4) | 0.2% mass max | 0.051% mass | — | Interpreted |
| Free moisture (surface water) | 0.5% mass max | 0.15% mass | Gravimetric loss on drying, 2 h @ 60 C | 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.
物理的及び化学的性質
| Property | 値 | Source |
|---|---|---|
| 外観 | Orange-red crystalline | Adjudicated |
| 形状 | Solid | Published reference |
| pH | 3.5–4.5 | Interpreted |
| 比重 | 2.35 | Interpreted |
| 沸点 | Decomposes at 400 °C (752 °F) before boiling | Adjudicated |
| 融点 | 357 °C (675 °F) | Adjudicated |
| 引火点 | Not applicable | Published reference |
| Solubility (water) | High water solubility, moderate organic solvent solubility | Published reference |
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| HDPE | Compatible | neat technical grade dihydrate solid, assay 99.0% mass min; supplied packed in 50 kg HDPE drums | supremepetrochemicals.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
- 国連番号
- UN3288Adjudicated
- 危険有害性クラス
- 6.1Adjudicated
- 容器等級
- IIIAdjudicated
- 正式輸送品名
- Toxic solid, inorganic, n.o.s. (Sodium dichromate dihydrate)Adjudicated
GHS / OSHA HCS 2024
- 注意喚起語
- 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, P221, P260, P261, P264, P270, P271, P272, P273, P280, P284, P285, P301+P310, P302+P352, P303+P361+P353, P304+P340, P304+P341, P305+P351+P338, P308+P313, P310, P314, P320, P321, P330, P333+P313, P342+P311, P362, P370+P378, P391, P403+P233, P405, P501Adjudicated
許容濃度
- 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
輸送情報は発行時点の49 CFR 172.101の照会結果を反映しています。データ出典：REL/IDLHはNIOSH Pocket Guide、PELはOSHA Zテーブル。出荷に関わる重要な判断の前に、必ず最新の規制本文で確認してください。
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Sodium Dichromate Technical Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Industrial manufacturingmubychem.com
- Used as a strong oxidizing agent (dichromate salt), supplied as the dihydrate Na2Cr2O7·2H2Omubychem.com
- Detergent manufacturingsupremepetrochemicals.com
- Water treatmentsupremepetrochemicals.com
- Construction additivessupremepetrochemicals.com
- Textile auxiliariessupremepetrochemicals.com
- Paper manufacturingsupremepetrochemicals.com
- Surface coatingsupremepetrochemicals.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
- 容器を密閉し、可燃物、有機物及び還元剤から離して、涼しく乾燥した換気の良い場所に施錠して保管すること。ドラフトチャンバー内でのみ取り扱い、粉じんの発生を最小限に抑えること。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
- 還元剤；可燃物および有機物質（紙、木材、油類）；酸類；hydrazine、hydroxylamineおよびその他の強還元剤（激しい反応）。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. (Sodium dichromate dihydrate), 6.1, PG III
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
NMFC Class
70
Placard
Toxic
容器等級
PG III
Revision History
Last reviewed 2026-06-29 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.9 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.8 | 2026-10-08 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.7 | 2026-09-30 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.6 | 2026-09-28 | Canonical data updated: 12 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-09-21 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-07-23 | Canonical data updated: 1 field 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 | 2026-07-21 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-06-29 | Canonical data re-verified: 11 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.