Industrial chemicals · Taylor, TXTechnical Data Sheet
Methyl Ethyl Ketone (MEK) ACS Grade
ACS Grade
- CAS番号
- 78-93-3
- UN番号
- UN1193
- 危険有害性クラス・容器等級
- 3 · PG II
- 構造
構造・PubChem - グレード
- ACS Grade
- 注意喚起語
- Danger
- 危険有害性
- 正式輸送品名
- Ethyl methyl ketone or methyl ethyl ketone
Identity & Composition
- 製品名
- Methyl Ethyl Ketone (MEK) ACS Grade
- Alliance Code
- methyl-ethyl-ketone-mek-acs-grade
- グレード
- ACS Grade
- 濃度
- —
- CAS番号
- 78-93-3PubChem
- 化学式
- C4H8OPubChem
- 分子量
- 72.11PubChem
- 製品種別
- Pure substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (C4H8O) | 99.0 % min | 99.7 % | Gas chromatography (GC) | Interpreted |
| Titrable acid | 0.0005 meq/g max | 0.00011 meq/g | — | Interpreted |
| Color (APHA) | 15 max | 7 | — | Interpreted |
| Residue after evaporation | 0.0025 % max | 0.00047 % | — | Interpreted |
| Water (H2O) | 0.20 % max | 0.033 % | — | Interpreted |
| Substances darkened by sulfuric acid | Passes test | Passes test | ACS monograph colorimetric test | Interpreted |
| Identification (Infrared spectrum) | Conforms to structure | Passes test | FTIR vs. reference spectrum | 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
| グレード | 濃度 | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade ACS Grade | — | — | current | current |
| Technical | — | — | methyl-ethyl-ketone-mek | 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.
物理的及び化学的性質
| Property | 値 | Source |
|---|---|---|
| 外観 | Volatile clear liquid, colorless, mobile | Adjudicated |
| 形状 | Liquid | Published reference |
| 臭い | Characteristic sweet, acetone-like odor | Adjudicated |
| 比重 | 0.805–0.806 at 20 °C (water = 1) | Adjudicated |
| 密度 | 0.806 at 68 °F (USCG, 1999) - Less dense than water; will float | Published reference |
| 沸点 | 79.6 °C (175.3 °F) at 760 mmHg | Adjudicated |
| 融点 | -86 °C (-123 °F) | Adjudicated |
| 引火点 | -9 to -6 °C (16 to 21 °F), closed cup | Adjudicated |
| 蒸気圧 | 78 mmHg (10.5 kPa) at 20 °C | Adjudicated |
| 蒸気密度 | 2.41–2.5 (air = 1) | Adjudicated |
| Solubility (water) | 290 g/L in water at 20 °C (partly miscible) | Adjudicated |
| 粘度 | 0.40–0.42 mPa·s at 15–20 °C | Adjudicated |
Polar solvent — purity vs. intended end-use (electronics, pharma, general industrial) is the dominant grade consideration. See application guidance for grade selection.
Materials of ConstructionService envelope ≈ 100%
| Material | Rating | Max T (°C) | Notes | Source |
|---|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 60 | Acceptable for alcohols; poor for ketones. | Parker O-ring Chemical Compatibility |
EPDM elastomer | Fair | — | Good for alcohols, poor for esters | Cole-Parmer Chemical Compatibility |
Viton (FKM) elastomer | Fair | 80 | Swells in acetone and esters; avoid for those. | Parker O-ring Chemical Compatibility |
FFKM (Kalrez) fluoropolymer | Excellent | 200 | Premium ester / ketone sealing | Cole-Parmer Chemical Compatibility |
PTFE fluoropolymer | Excellent | 200 | Universal solvent compatibility. | Cole-Parmer Chemical Compatibility |
Borosilicate Glass glass ceramic | Excellent | 100 | Universally inert. | Cole-Parmer Chemical Compatibility |
316L Stainless Steel metal | Excellent | 80 | Inert; preferred for high-purity solvent service. | Cole-Parmer Chemical Compatibility |
Aluminium metal | Good | 40 | Acceptable; avoid prolonged wet contact | Cole-Parmer Chemical Compatibility |
Carbon Steel metal | Fair | 50 | Trace moisture causes rust; flash-rust prevention required. | Cole-Parmer Chemical Compatibility |
HDPE thermoplastic | Fair | 40 | Swells with many polar solvents; verify per solvent. | Cole-Parmer Chemical Compatibility |
PP thermoplastic | Good | 50 | Acceptable but watch swelling with esters | Cole-Parmer Chemical Compatibility |
PVC thermoplastic | Fair | 25 | Esters soften PVC; avoid for esters | Cole-Parmer Chemical Compatibility |
Ratings reflect the service envelope (concentration × temperature) shown. Always confirm against your specific duty cycle and contact-time before equipment selection. The most cautious rating across overlapping references is shown.
Materials Selection Tool
Showing 12 of 12 material ratings within the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 60 | Acceptable for alcohols; poor for ketones. |
EPDM elastomer | Fair | — | Good for alcohols, poor for esters |
Viton (FKM) elastomer | Fair | 80 | Swells in acetone and esters; avoid for those. |
FFKM (Kalrez) fluoropolymer | Excellent | 200 | Premium ester / ketone sealing |
PTFE fluoropolymer | Excellent | 200 | Universal solvent compatibility. |
Borosilicate Glass glass ceramic | Excellent | 100 | Universally inert. |
316L Stainless Steel metal | Excellent | 80 | Inert; preferred for high-purity solvent service. |
Aluminium metal | Good | 40 | Acceptable; avoid prolonged wet contact |
Carbon Steel metal | Fair | 50 | Trace moisture causes rust; flash-rust prevention required. |
HDPE thermoplastic | Fair | 40 | Swells with many polar solvents; verify per solvent. |
PP thermoplastic | Good | 50 | Acceptable but watch swelling with esters |
PVC thermoplastic | Fair | 25 | Esters soften PVC; avoid for esters |
Regulatory & Transport
DOT / 49 CFR
- 国連番号
- UN119349 CFR 172.101
- 危険有害性クラス
- 3Adjudicated
- 容器等級
- IIAdjudicated
- 正式輸送品名
- Ethyl methyl ketone or methyl ethyl ketoneAdjudicated
GHS / OSHA HCS 2024
- 注意喚起語
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H225, H319, H336, EUH066ECHA C&L Inventory
- P-Codes (Precautionary Statements)
- P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P312, P337+P313, P370+P378, P403+P233, P403+P235, P405, P501ECHA C&L Inventory
許容濃度
- OSHA PEL (29 CFR 1910.1000)
- 200 ppm TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- 200 ppm TWA / 300 ppm STELAdjudicated
- NIOSH REL
- 200 ppm TWA / 300 ppm STELNIOSH Pocket Guide
- NIOSH IDLH
- 3000 ppmNIOSH Pocket Guide
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。
Health & Fire Hazard
Acute Toxicology
- LD₅₀ Oral (rat)
- 2054–2737 mg/kgAdjudicated
- LD₅₀ Dermal (rabbit)
- 6480 mg/kgAdjudicated
- LC₅₀ Inhalation (rat, 4 h)
- 11700 ppmAdjudicated
急性毒性値はSDS第11項またはNIOSH RTECSによる。
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Methyl Ethyl Ketone (MEK) ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Catalog EquivalentsCross-reference vs major chemical suppliers
Sigma-Aldrich
| SKU | グレード | Conc. | Match | Notes |
|---|---|---|---|---|
| 360473 | ACS Reagent | 99% | Unverified candidate | ACS Reagent ≥99% |
Cross-references are informational. Confirm against the manufacturer's current specification before substitution. Competitor trademarks are property of their respective owners.
Applications
- ACS reagent grade material for high-purity laboratory applicationslabdepotinc.com
- Used widely as a solventlabdepotinc.com
- Solvent for natural and synthetic resins, giving solutions with low viscosity and high solids contentwurthmachinery.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
- 熱、火花、裸火から離れた、涼しく乾燥した換気の良い可燃物保管エリアで容器を密閉して保管すること。吸湿性：湿った空気から保護すること。酸化剤から遠ざけること。移送時には容器を接地および等電位結合すること。Adjudicated
- Handling Precautions
- Use chemical-resistant gloves and splash goggles. Bond and ground during transfer to prevent static accumulation. Eliminate ignition sources within vapor envelope.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- 強酸化剤（過酸化水素および硝酸を含む（激しい反応））、硫酸などの強酸、強塩基および苛性物質、強還元剤、アンモニアおよびアミン類、クロロホルム、銅。多くのプラスチック、樹脂、ゴムを侵す。Adjudicated
- Shelf Life
- 12 monthswurthmachinery.comProvided proper storage and handling precautions are taken
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)
UN1193, Ethyl methyl ketone or methyl ethyl ketone, 3, PG II
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-06-18 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.6 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-10-07 | Canonical data updated: 18 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-10-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-09-30 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-06-18 | Canonical data re-verified: 3 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.