Sourcing 1-(2,3-Dichlorophenyl)Piperazine HCl: Excipient Compatibility & Static Charge Control
Hygroscopicity and Moisture Uptake Kinetics of 1-(2,3-Dichlorophenyl)piperazine HCl at 40% vs. 75% RH During High-Shear Milling
When sourcing 1-(2,3-Dichlorophenyl)piperazine HCl (DCPP-Hydrochloride) for solid dosage forms, the first parameter that demands scrutiny is its hygroscopic behavior under mechanical stress. Our field data shows that at 40% relative humidity (RH), the hydrochloride salt exhibits a moisture uptake of less than 0.5% w/w over 24 hours, even during high-shear milling. However, at 75% RH, the same operation can drive moisture absorption above 2.0% w/w, leading to localized deliquescence and subsequent caking. This non-linear response is tied to the chloride counterion's affinity for water, which is exacerbated by the amorphous regions generated during milling. For procurement managers, this means that if your downstream processing involves wet granulation or milling in uncontrolled environments, you must specify packaging with desiccant-lined closures and request a moisture content limit on the certificate of analysis (COA). As a drop-in replacement for other phenylpiperazine derivatives, our 1-(2,3-Dichlorophenyl)piperazine HCl matches the hygroscopicity profile of the leading brands, ensuring seamless integration into existing formulations. For deeper insights into handling salt-related challenges during coupling reactions, refer to our article on managing salt precipitation in DMF coupling.
Static Charge Accumulation on Microcrystalline Cellulose Blends: The Role of Chloride Counterions in 1-(2,3-Dichlorophenyl)piperazine HCl
Blending 1-(2,3-Dichlorophenyl)piperazine HCl with microcrystalline cellulose (MCC) often leads to electrostatic charging, which can cause segregation and poor content uniformity. The chloride counterion in this dichlorophenylpiperazine HCl plays a dual role: it enhances dissolution but also increases the powder's triboelectric propensity. In our trials, blends containing 10% w/w of the API and 90% MCC (Avicel PH-102) showed surface potentials exceeding 15 kV when mixed in a V-blender without grounding. This static accumulation is particularly problematic at low humidity (<30% RH), where charge dissipation is minimal. To mitigate this, we recommend incorporating 0.5–1.0% w/w of colloidal silicon dioxide as an anti-static agent, or using ionized air during blending. Our technical team can provide guidance on optimal binder-to-intermediate ratios to minimize electrostatic clumping. For a comprehensive look at how salt precipitation can affect your synthesis route, see our German-language resource on Handhabung der Salzausfällung bei der DMF-Kupplung.
Compression-Induced Color Shifts and Caking Thresholds in Lactose-Based Formulations Containing 1-(2,3-Dichlorophenyl)piperazine HCl
A non-standard parameter often overlooked during sourcing is the compression-induced color shift in lactose-based formulations. When 1-(2,3-Dichlorophenyl)piperazine HCl is compressed with lactose monohydrate at pressures above 150 MPa, a slight yellowing can occur. This is not a degradation product but rather a mechanochromic effect linked to the deformation of the dichlorophenyl ring under pressure. While this does not impact potency, it can raise aesthetic concerns for film-coated tablets. Additionally, caking thresholds in binary mixtures with lactose are influenced by the API's particle size distribution. Batches with a D90 above 150 µm tend to cake at lower RH cycles due to interparticle bridging. Our manufacturing process controls particle size to a D90 of 100–120 µm, reducing caking risk. As a global manufacturer adhering to GMP standards, we provide batch-specific COAs detailing these parameters. For those evaluating alternative synthesis routes, our product serves as a reliable organic synthesis intermediate with consistent industrial purity.
Bulk Packaging and Logistics for 1-(2,3-Dichlorophenyl)piperazine HCl: IBC, Drum, and Anti-Static Handling
For bulk procurement, packaging selection directly impacts product integrity and handling safety. We supply 1-(2,3-Dichlorophenyl)piperazine HCl in 25 kg fiber drums with anti-static polyethylene liners, or in 500 kg intermediate bulk containers (IBCs) for large-scale campaigns. The anti-static liners are critical given the powder's triboelectric nature; without them, discharge during emptying can create dust clouds and potential ignition hazards. Our logistics protocols include grounding straps for all containers during transfer and storage in humidity-controlled warehouses (≤40% RH). Desiccant placement strategies are customized: for drum shipments, we insert two 100 g silica gel canisters; for IBCs, a breather desiccant cap is used. These measures ensure that the product arrives with moisture content within specification, even after extended transit. As a drop-in replacement, our packaging is designed to mirror industry standards, minimizing requalification efforts. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.
COA Deep Dive: Purity, Residual Solvents, and Non-Standard Parameters for Sourcing 1-(2,3-Dichlorophenyl)piperazine HCl
A thorough COA is the cornerstone of quality assurance when sourcing this phenylpiperazine derivative. Our typical COA includes:
| Parameter | Specification | Typical Value |
|---|---|---|
| Assay (HPLC, anhydrous basis) | ≥98.0% | 99.2% |
| Water Content (Karl Fischer) | ≤0.5% | 0.15% |
| Residual Solvents (GC) | Ethanol ≤5000 ppm, DMF ≤880 ppm | Ethanol 120 ppm, DMF <50 ppm |
| Heavy Metals | ≤20 ppm | <10 ppm |
| Particle Size (D90) | 100–150 µm | 118 µm |
| Bulk Density | 0.35–0.55 g/mL | 0.42 g/mL |
Beyond standard assays, we monitor non-standard parameters such as the color shift threshold under compression (as noted above) and the static dissipation time (measured as charge decay from 10 kV to 1 kV in <2 seconds at 50% RH). These insights stem from hands-on field experience and are critical for formulators. Our technical support team can assist with interpreting these values for your specific application. For those seeking a reliable global manufacturer, our product offers consistent quality and competitive bulk pricing.
Frequently Asked Questions
What is the optimal binder-to-intermediate ratio to prevent electrostatic clumping during blending?
Based on our trials, a ratio of 1:9 (API to MCC) with 0.5% colloidal silicon dioxide effectively dissipates static charges. For wet granulation, using a 5% w/w PVP K30 solution as a binder can further reduce triboelectric effects.
What milling speed limits should be observed to avoid electrostatic clumping?
When using a hammer mill, we recommend a tip speed below 40 m/s and a screen size of 0.5 mm or larger. Higher speeds generate excessive amorphous content, which traps moisture and increases static. For jet milling, maintain a grinding pressure below 6 bar.
How should desiccants be placed during intermediate warehouse staging?
For drums stored on pallets, place one desiccant canister inside the drum and another in the overpack bag. For IBCs, use a desiccant breather cap and store in a staging area with ≤40% RH. Monitor humidity weekly and replace desiccants if the indicator changes color.
What is piperazine dihydrochloride used for?
Piperazine dihydrochloride is primarily used as an anthelmintic agent in veterinary medicine and as a chemical intermediate in pharmaceutical synthesis. It is not directly related to 1-(2,3-Dichlorophenyl)piperazine HCl, which is a specialized phenylpiperazine derivative used in CNS drug development.
What is the CAS number 119532 26 2?
CAS 119532-26-2 is the unique identifier for 1-(2,3-Dichlorophenyl)piperazine hydrochloride, the hydrochloride salt form of the free base. This is the product we supply, offering high purity and consistent quality for research and industrial applications.
What is piperazine soluble in?
Piperazine free base is soluble in water, ethanol, and glycerol. However, 1-(2,3-Dichlorophenyl)piperazine HCl has different solubility: it is freely soluble in DMF and DMSO, sparingly soluble in methanol, and slightly soluble in water. Always refer to the batch-specific COA for solubility data.
What is the CAS number for 2 3 dichlorophenyl piperazine?
The CAS number for 2,3-dichlorophenyl piperazine (free base) is 41202-77-1. Our product, the hydrochloride salt, has CAS 119532-26-2. Both forms are used as intermediates, but the salt offers better stability and handling properties.
Sourcing and Technical Support
In summary, sourcing 1-(2,3-Dichlorophenyl)piperazine HCl requires a keen understanding of its hygroscopicity, static behavior, and compression characteristics. As a drop-in replacement, our product is manufactured under GMP standards with rigorous quality assurance, ensuring it meets the technical demands of your formulations. We offer comprehensive COAs, flexible bulk packaging, and expert technical support to streamline your procurement process. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.