Lactose Crystal Matrix: bulk_density 0.55-0.65 g/cm³

Component Specifications

Definition

The lactose crystal matrix is a precisely engineered crystalline structure composed of pharmaceutical-grade lactose monohydrate particles arranged in a specific geometric configuration. This component serves as the primary excipient in tablet formulations, providing structural integrity, uniform drug distribution, and controlled dissolution properties. The matrix is designed with optimal particle size distribution (typically 50-200 μm), specific surface area, and crystalline morphology to ensure consistent compaction behavior, flow characteristics, and bioavailability enhancement in final pharmaceutical products.

Working Principle

The lactose crystal matrix functions through controlled crystalline bonding and capillary action during tablet compression. When subjected to pressure in tablet presses, the crystalline surfaces undergo plastic deformation and fragmentation, creating new bonding sites through mechanical interlocking and solid bridges. The α-lactose monohydrate crystals exhibit specific water sorption properties that facilitate binding while maintaining chemical stability. During dissolution, the matrix structure controls liquid penetration through capillary networks, regulating drug release kinetics according to designed porosity and surface characteristics.

Materials

Pharmaceutical-grade α-lactose monohydrate (C12H22O11·H2O) with purity ≥99.5%, crystalline form: tomahawk-shaped crystals, moisture content: 4.5-5.5% w/w, residual solvents: <0.5% total, microbial limits: TAMC <1000 CFU/g, TYMC <100 CFU/g, absence of E. coli and Salmonella.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Solubility	21 g/100 mL water at 25°C
Bulk Density	0.55-0.65 g/cm³
Hausner Ratio	1.18-1.25
Loss On Drying	4.5-5.5%
Tapped Density	0.70-0.80 g/cm³
Angle Of Repose	30-35°
Crystalline Form	α-monohydrate
Compressibility Index	15-20%
Specific Surface Area	0.3-0.5 m²/g
Particle Size Distribution	D10: 50 μm, D50: 100 μm, D90: 200 μm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, ISO 13485, USP-NF, EP, JP, ICH Q3C, ICH Q7

Parent Products

This component is used in the following industrial products

Pharmaceutical-Grade Lactose Monohydrate

High-purity lactose excipient for pharmaceutical tablet and capsule formulations

View Product Details

Engineering Analysis

Risks & Mitigation

Moisture sensitivity affecting flow properties
Potential for caking during storage
Batch-to-batch variability in crystalline morphology
Microbial contamination risk
Incompatibility with certain APIs (e.g., amines)

FMEA Triads

Trigger: Inadequate moisture control during storage
Failure: Reduced flowability and inconsistent tablet weight
Mitigation: Implement humidity-controlled storage (RH <60%), use desiccants in packaging, conduct regular moisture content testing

Trigger: Particle size distribution outside specification
Failure: Poor compaction and tablet friability issues
Mitigation: Implement statistical process control for milling operations, conduct regular particle size analysis, establish acceptance criteria for D10, D50, D90 values

Trigger: Crystalline polymorphism or form change
Failure: Altered dissolution profile and bioavailability
Mitigation: Implement XRPD analysis for crystalline form verification, control crystallization parameters, establish stability testing protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% for particle size distribution, ±0.5% for moisture content, ±2% for bulk density

Test Method

USP <786> for particle size, USP <731> for loss on drying, USP <616> for bulk density, USP <61> for microbial limits, HPLC for purity, XRPD for crystalline form

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Lactose Crystal Matrix

Manufacturer profiles associated with Lactose Crystal Matrix.

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Frequently Asked Questions

What is the primary function of lactose crystal matrix in pharmaceutical manufacturing?

The lactose crystal matrix serves as the primary excipient in tablet formulations, providing structural support, uniform drug distribution, controlled dissolution properties, and consistent compaction behavior during tablet manufacturing processes.

How does particle size distribution affect tablet quality?

Optimal particle size distribution (50-200 μm) ensures consistent flow properties, uniform die filling, homogeneous mixing with active ingredients, and predictable compaction behavior, resulting in tablets with consistent weight, hardness, and dissolution profiles.

What are the storage requirements for lactose crystal matrix?

Store in sealed containers at controlled room temperature (15-25°C) with relative humidity below 60%. Protect from moisture absorption and contamination. Shelf life is typically 36 months from manufacturing date when stored properly.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Lactose Crystal Matrix