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Moneide Chemicals
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4079-68-9 Silver Plating Brightener | High Purity, Stable
- Time of issue:Oct . 16, 2025 15:20
(Summary description)Tangshan Moneide Trading Co., Ltd. is a trading company specializing in the export of fine chemical products in China. Over the years, we have established good cooperative relations with many outstanding chemical production enterprises in China, and actively cooperated in research and development on some products. Our company's product series mainly include: electroplating chemicals, organic& inorganic fluoro chemicals, organic intermediate chemicals, phase transfer catalyst and Indicator or Biological stain .
- Categories:Company dynamic
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- Time of issue:2019-12-30 10:55
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If you’ve spent time in fine-chemicals sourcing, you’ve probably bumped into DEP sooner or later. It’s a small, nimble building block with an alkyne handle and a tertiary amine—two reactive motifs that make process chemists perk up. To be honest, demand has been quietly climbing as teams chase slimmer routes to cationic surfactants, API side chains, and “clickable” polymer modifiers. Origin matters too: MoneideChem (2-7-523 Jidong Building Materials, Tangshan, Hebei 064000, China) ships consistent batches and, in my notebook at least, answers tech emails faster than most distributors. DEP’s main synonym—1‑Diethylamino‑2‑propyne—maps to CAS 4079-68-9. Some labs shorthand it as “DEP,” others “DEAP.” Same conversation either way. Quick process note (how it’s made): most producers couple a propargyl halide with diethylamine under basic conditions (SN2), follow with salt removal, fine filtration, and vacuum fractionation. QC normally covers GC area% purity, KF moisture, and identity by 1H NMR. A recent batch I saw reported 99.4% (GC) and 0.08% H2O—solid for pharma-intermediate work. Customer feedback? It seems that color stability is good if you keep it dry and out of light; many customers say the material quaternizes cleanly and stores well over a year in lined drums. The odor is typical of short-chain tertiary amines—ventilate and you’re fine. Packaging: 1 kg amber bottles, 25 kg drums, or 200 kg lined drums. Options include tighter water spec (≤0.10%), metal content screens, and NMR/GC trace files attached to COA. Compliance sets available on request: ISO 9001 certificate, SDS (GHS), and statements for REACH/transport classification. A specialty coatings group switched to DEP (CAS 4079-68-9) for a cationic additive route. After tuning base equivalents and drying, their quaternization yield rose from 82% to 91% with cleaner GC. Service life of the final additive improved in salt‑spray tests, which—frankly—surprised their QA team but tracked with the tighter amine purity.
References:
DEP (1‑Diethylamino‑2‑propyne), CAS 4079-68-9
Product snapshot and specs
Parameter
Typical spec (≈, real-world use may vary)
Test method
CAS
4079-68-9
COA reference
Formula / MW
C7H13N / ≈111.18 g·mol‑1
Calculated
Appearance
Colorless to pale yellow liquid
Visual
Purity
≥99.0% (GC)
GC, in-house SOP
Water
≤0.20%
Karl Fischer (GB/T 6283)
Boiling point
≈118–122 °C at 1 atm
Literature/COA
Density (20 °C)
≈0.82 g·mL‑1
ASTM D4052
Flash point
≈25–35 °C (closed cup)
ASTM D93
Storage / Shelf life
Tightly sealed, ≤25 °C; 12–24 months
Label/COA
Where DEP earns its keep
Vendor comparison (abbreviated)
Vendor
Highlights
Lead time
Docs
Notes
MoneideChem (China)
Tight GC specs; moisture control; customization
≈7–14 days ex‑works
COA, SDS; ISO 9001 QMS stated
Origin: Tangshan, Hebei
Regional trader
Small packs; flexible MOQs
Stock‑dependent
COA; limited QC details
Ask for fresh COA
Global distributor
Global logistics; compliance support
≈2–4 weeks
SDS, REACH notes
Higher landed cost
Customization and QA
Case study (concise)
1. PubChem Compound entry for CAS 4079-68-9 (NIH): https://pubchem.ncbi.nlm.nih.gov
2. ECHA information on tertiary amines and GHS classification: https://echa.europa.eu
3. ISO 9001:2015 Quality management systems—Requirements.
4. ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients.
5. ASTM D4052 (Density) and ASTM D93 (Flash Point) standard test methods.
6. GB/T 6283 Determination of water—Karl Fischer method.
Moneide Chemicals
