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REACH AZP-908 is an enhanced-efficacy, activated superfine antiperspirant powder. Its INCI name is Aluminum Zirconium Tetrachlorohydrex Gly, and its verified applications are anhydrous suspension sticks, roll-ons, and soft solids.
REACH AZP-908 is an enhanced-efficacy aluminum zirconium tetrachlorohydrex glycine complex supplied as an activated superfine powder.
REACH AZP-908 functions as a high-performance antiperspirant and deodorancy-supporting active for anhydrous personal care formulations.
REACH AZP-908 combines very low particle size, efficient perspiration reduction, antimicrobial activity, and smooth non-gritty application properties.
CAS Number: 134910-86-4
EC Number: 603-882-0
Molecular Formula: Variable aluminum-zirconium hydroxychloride-glycine complex; no single fixed molecular formula
Molecular Weight: Variable; not applicable as one defined molecular substance
SYNONYMS
REACH AZP-908, REACH™ AZP-908, Reach AZP 908, Reach AZP908, AZP-908, Reach 908 SUF, Reach AZP-908 SUF, Reach AZP 908SUF, Reach AZP-908 Superfine, Reach AZP 908 Superfine GL, Aluminum Zirconium Tetrachlorohydrex Gly, Aluminium Zirconium Tetrachlorohydrex Gly, Aluminum Zirconium Tetrachlorohydrex Glycine, Aluminium Zirconium Tetrachlorohydrex Glycine, Aluminum Zirconium Tetrachlorohydrex-Gly, Aluminum/Zirconium Tetrachlorohydrex-Gly, Activated Aluminum Zirconium Tetrachlorohydrex Gly, Activated Aluminum Zirconium Glycine Complex, Aluminum Zirconium Hydroxychloride Glycine Complex, Aluminum Zirconium Tetrachlorohydrate Glycine Complex, Aluminum Zirconium Complexes, AZG Antiperspirant Active, Activated AZG Powder, Superfine AZG Powder, AZP Antiperspirant Powder, Enhanced-Efficacy Antiperspirant Active, Antiperspirant Active AZP-908, Aluminum Zirconium Antiperspirant Active, Aluminum Zirconium Glycine Antiperspirant Salt, Superfine Antiperspirant Powder, Anhydrous Antiperspirant Active, Suspension-Stick Antiperspirant Active, Soft-Solid Antiperspirant Active, Roll-On Antiperspirant Active, REACH AZP-908, REACH AZP-908, Rezal AZP 908, Rezal AZP-908, Rezal 36 GP SUF, Rezal 36G, Rezal 36GC, 36 GPC, Dow Corning AZG 370, Reach AZP 902, CAS 134910-86-4, EC 603-882-0, Aluminum; 2-Aminoacetic Acid; Zirconium(IV); Chloride; Hydroxide; Hydrate, Complex Reaction Product of Aluminum Zirconium Tetrachlorohydrate and Glycine
APPLICATIONS
REACH AZP-908 serves as an active ingredient in anhydrous antiperspirant suspension sticks intended to reduce underarm perspiration.
REACH AZP-908 supports solid stick formulations requiring efficient active delivery and uniform distribution throughout the product matrix.
REACH AZP-908 provides a smooth, non-gritty payoff in properly formulated antiperspirant sticks because of its very low particle size.
REACH AZP-908 enables manufacturers to formulate high-performance sticks without relying on an aqueous external phase.
REACH AZP-908 functions as the principal perspiration-reducing active in anhydrous suspension roll-ons.
REACH AZP-908 promotes uniform active distribution in roll-on formulations when suitable suspending and rheological agents are employed.
REACH AZP-908 contributes to smooth application through roller-ball packaging without excessive perception of solid particles.
REACH AZP-908 helps maintain dose consistency by remaining homogeneously suspended in properly stabilized roll-on systems.
REACH AZP-908 performs as an antiperspirant active in anhydrous soft-solid deodorant and antiperspirant products.
REACH AZP-908 facilitates the development of soft solids that combine spreadability with effective perspiration control.
REACH AZP-908 delivers active material through semi-solid formulations designed for controlled dispensing from package apertures.
REACH AZP-908 supports soft-solid systems requiring a balance of suspension stability, sensory smoothness, and active performance.
REACH AZP-908 reduces perspiration from the underarm area when incorporated at an appropriate permitted active concentration.
REACH AZP-908 contributes to underarm dryness by interacting with moisture within the sweat duct environment.
REACH AZP-908 provides enhanced-efficacy performance through its activated aluminum-zirconium complex structure.
REACH AZP-908 enables formulators to develop antiperspirant products positioned for dependable daily perspiration management.
REACH AZP-908 supports deodorancy by reducing the amount of perspiration available for odor-producing microbial activity.
REACH AZP-908 exhibits antimicrobial activity against selected Gram-positive microorganisms associated with body odor development.
REACH AZP-908 contributes to odor reduction without functioning solely as a fragrance or odor-masking ingredient.
REACH AZP-908 complements compatible deodorant ingredients, fragrances, and odor-control technologies in combined antiperspirant-deodorant products.
REACH AZP-908 can be incorporated into underarm products designed to provide both perspiration reduction and deodorancy.
REACH AZP-908 offers formulators an active platform for fragranced and unfragranced antiperspirant products.
REACH AZP-908 supports products intended for consumers seeking effective wetness control with a smooth application experience.
REACH AZP-908 helps reduce the sensory roughness that can arise from larger antiperspirant salt particles.
REACH AZP-908 promotes homogeneous active distribution in silicone-based anhydrous suspension systems.
REACH AZP-908 functions effectively in compatible volatile and non-volatile emollient carriers selected for suspension antiperspirants.
REACH AZP-908 allows formulators to combine the active with suitable waxes, structuring agents, and suspension aids.
REACH AZP-908 supports stable formulations containing compatible oils, esters, silicones, and emollient ingredients.
REACH AZP-908 enables the preparation of opaque antiperspirant sticks with uniform active loading.
REACH AZP-908 facilitates consistent processing during the manufacture of batch-produced suspension products.
REACH AZP-908 contributes to reproducible filling behavior when powder wetting, mixing, temperature, and rheology are properly controlled.
REACH AZP-908 helps minimize localized active concentration differences within finished anhydrous products.
REACH AZP-908 provides a superfine active option for products where smooth glide and non-gritty payoff are important consumer attributes.
REACH AZP-908 supports sensory-optimized formulations intended to spread evenly across the skin.
REACH AZP-908 improves the uniformity of applied active films when it is fully dispersed throughout the product base.
REACH AZP-908 enables formulators to balance efficacy with application properties such as glide, drag, softness, and residue perception.
REACH AZP-908 can be formulated into antiperspirant products intended for application to the hands where perspiration reduction is desired.
REACH AZP-908 supports compatible topical formulations designed to manage excessive moisture on the feet.
REACH AZP-908 provides aluminum-zirconium antiperspirant activity across approved external-use applications subject to regional regulations.
REACH AZP-908 allows product developers to tailor delivery format while retaining the same fundamental active technology.
REACH AZP-908 serves as an activated alternative to conventional non-activated aluminum-zirconium antiperspirant powders.
REACH AZP-908 offers high active performance at formulation levels compliant with the applicable regional antiperspirant regulations.
REACH AZP-908 supports products developed for global markets because the grade is offered with broad regional availability.
REACH AZP-908 provides a Halal-certified ingredient option for qualifying personal care formulations and manufacturing programs.
REACH AZP-908 contributes to vegan product concepts because the supplier identifies the grade as suitable for vegan positioning.
REACH AZP-908 supports personal care products developed in accordance with applicable cGMP manufacturing expectations.
REACH AZP-908 enables formulators to prepare finished products with a recommended acidic pH range where applicable to the formulation format.
REACH AZP-908 performs best when incompatible anionic surfactants, strong bases, and unsuitable self-emulsifying materials are excluded.
REACH AZP-908 requires careful moisture control during production because the superfine salt readily absorbs atmospheric water.
REACH AZP-908 provides a specialized active solution for non-aerosol anhydrous antiperspirant sticks, suspension roll-ons, and soft solids.
REACH AZP-908 is a proprietary activated aluminum zirconium tetrachlorohydrex glycine antiperspirant complex.
Chemically, REACH AZP-908 belongs to the class of basic aluminum-zirconium hydroxychloride salts complexed with glycine.
REACH AZP-908 is not one small molecule with a single uniform structure but a distribution of related monomeric and polymeric metal hydroxychloride species.
Its composition contains aluminum, zirconium, hydroxyl groups, chloride ions, water associated with the complex, and glycine.
Glycine complexation helps stabilize the zirconium-containing active and contributes to the controlled properties required for cosmetic use.
REACH AZP-908 is manufactured through controlled formation and activation of an aluminum-zirconium tetrachlorohydrex glycine complex.
Activation modifies the distribution of polymeric species to enhance antiperspirant efficacy compared with conventional non-activated grades.
Following synthesis, the active is processed into a superfine dry powder suitable for incorporation into anhydrous suspension systems.
DESCRIPTION
REACH AZP-908's very low particle size promotes homogeneous distribution and reduces the gritty sensation that can occur with coarser powders.
Patent literature reports a median particle diameter of approximately 2.5–3.5 micrometres for the superfine AZP-908 grade.
When REACH AZP-908 is correctly dispersed, the fine particles remain distributed throughout a structured anhydrous vehicle rather than dissolving in the oil phase.
REACH AZP-908 becomes soluble or dispersible when exposed to sufficient water, reflecting the hydrophilic and hygroscopic character of the metal salt complex.
During application, REACH AZP-908 is deposited onto the skin as part of the anhydrous product film.
Moisture from perspiration hydrates and partially solubilizes the aluminum-zirconium salt.
The hydrated active subsequently forms temporary precipitated material within the superficial sweat duct environment.
This process reduces the flow of perspiration to the skin surface without permanently altering the sweat gland.
Reduced perspiration also limits the moist conditions that support odor-producing microorganisms.
REACH AZP-908 demonstrates antimicrobial efficacy against selected Gram-positive microorganisms, providing additional deodorancy support.
REACH AZP-908 is intended primarily for suspension sticks, suspension roll-ons, and soft-solid systems rather than aerosol formats.
The recommended maximum use level of REACH AZP-908 is 20% calculated on an anhydrous active basis, subject to applicable regional regulations.
The final formulation should generally remain within a pH range of approximately 3.5–4.5 where the product format permits pH measurement.
Anionic surfactants should be avoided because they may interact unfavorably with the cationic aluminum-zirconium complex.
Strong bases can destabilize REACH AZP-908 , alter its polymeric distribution, or produce undesirable precipitation.
Self-emulsifying emulsifier grades may also cause incompatibility and should be avoided unless validated through formulation testing.
REACH AZP-908 is hygroscopic and readily absorbs moisture when exposed to humid air.
Moisture uptake can cause agglomeration, reduced powder flow, processing inconsistency, and changes in active distribution.
For this reason, opened packaging of REACH AZP-908 should be resealed promptly and exposure during weighing and transfer should be minimized.
The product slowly corrodes iron, brass, copper, aluminum, and mild steel, making compatible processing and storage equipment essential.
Appropriate contact materials may include suitable corrosion-resistant equipment selected through plant-specific compatibility testing.
REACH AZP-908 as naturally derived, vegan, Halal, and IECIC compliant.
The complex nature of REACH AZP-908 means that no single molecular formula or molecular weight accurately represents the entire commercial material.
REACH AZP-908's CAS number identifies the complex reaction product rather than one precisely defined molecular species.
REACH AZP-908 has a minimum published shelf life of three years when kept in appropriate sealed packaging under recommended conditions.
REACH AZP-908 identity and structural description are consistent with the USP definition of Aluminum Zirconium Tetrachlorohydrex Gly and ECHA’s description of the substance as a complex reaction product of aluminum zirconium tetrachlorohydrate and glycine.
PROPERTIES
Product Name: REACH AZP-908
Trade Name: REACH™ AZP-908
INCI Name: Aluminum Zirconium Tetrachlorohydrex Gly
Chemical Name: Aluminum Zirconium Tetrachlorohydrex Glycine Complex
Chemical Family: Aluminum-zirconium hydroxychloride antiperspirant salts
Product Type: Activated enhanced-efficacy antiperspirant active
Primary Function: Perspiration reduction
Secondary Functions: Deodorancy support, antimicrobial activity, and bacteriostatic activity
Physical Form: Activated superfine powder
Appearance: Fine powder
CAS Number: 134910-86-4
EC/List Number: 603-882-0
Molecular Formula: Variable complex composition
Molecular Weight: Variable; no single applicable value
Aluminum Content: 14.5–15.5%
Zirconium Content: 13.0–15.5%
Chloride Content: 17.0–18.5%
Anhydrous Content: 72–88%
Aluminum-to-Zirconium Molar Ratio: 3.40:1–3.80:1
Total Metals-to-Chloride Molar Ratio: 0.90:1–1.50:1
pH: 3.0–5.0 as a 15% aqueous preparation
Iron Content: Maximum 150 ppm
Elemental Impurities: Passes USP requirements according to the technical data sheet
Particle Size Classification: Superfine
Median Particle Diameter: Approximately 2.5–3.5 µm for the patent-described superfine grade
Tap Density: Approximately 0.70 g/cm³ in patent-reported data
Surface Area per Unit Mass: Approximately 1.57 m²/g in patent-reported data
Refractive Index: Approximately 1.572 in patent-reported data
Hygroscopicity: Readily absorbs atmospheric moisture
Critical Relative Humidity: Approximately 18% in published patent data
Water Behavior: Hydrophilic and soluble or dispersible upon hydration
Oil Solubility: Insoluble; remains suspended in anhydrous oil systems
Recommended Finished-Product pH: Approximately 3.5–4.5
Maximum Recommended Use Level: 20% on an anhydrous active basis
Suitable Product Formats: Anhydrous suspension sticks, suspension roll-ons, and soft solids
Aerosol Suitability: Not recommended for aerosol products
Incompatible Formulation Materials: Anionic surfactants, strong bases, and unsuitable self-emulsifying emulsifiers
Corrosive Effect on Metals: Slowly corrodes iron, brass, copper, aluminum, and mild steel
Antimicrobial Performance: Active against selected Gram-positive microorganisms
Regional Availability: Global
Supplier Sustainability Claims: Naturally derived, vegan, Halal, and ISO 16128 indexed
ISO Index: 73%
Certification and Compliance Claims: Halal and IECIC compliant
Shelf Life: Minimum three years from the manufacturing date
Storage Requirement: Keep sealed and protect from moisture
The compositional ranges and formulation data are reported as typical properties rather than release specifications. ST AID
Inhalation: Move the affected person to fresh air and keep the individual at rest. Avoid further exposure to airborne powder. Obtain medical attention if coughing, throat irritation, breathing discomfort, or other symptoms persist.
Skin Contact: Remove contaminated clothing and wash the affected skin thoroughly with soap and water. Avoid prolonged contact with concentrated powder. Seek medical advice if redness, dryness, irritation, or discomfort develops and continues.
Eye Contact: Immediately rinse the eyes cautiously with clean water for at least 15 minutes while holding the eyelids open. Remove contact lenses when present and easy to do, then continue rinsing. Obtain prompt medical attention if irritation, pain, or visual disturbance persists.
Ingestion: Rinse the mouth thoroughly with water. Do not induce vomiting unless instructed by qualified medical personnel. Never give anything by mouth to an unconscious person. Contact a physician or poison information center if a significant quantity has been swallowed or symptoms occur.
Note to Physicians: Treat symptomatically and provide supportive care. Consider the acidic, hygroscopic aluminum-zirconium hydroxychloride nature of the material when evaluating irritation. The current regional Safety Data Sheet should be consulted for authoritative product-specific medical guidance.
HANDLING AND STORAGE
Handling: Handle the superfine powder carefully to minimize airborne dust and moisture exposure. Keep transfer, weighing, and mixing operations closed or locally contained whenever practical. Avoid contact with the eyes, prolonged skin contact, and inhalation of dust. Use clean, dry equipment and reseal partially used containers immediately after material withdrawal.
Ventilation: Provide effective general ventilation and local exhaust at powder charging, weighing, transfer, and mixing points. Prevent dust from spreading into adjacent work areas. Where ventilation cannot maintain exposure at an acceptable level, use respiratory protection selected through an occupational risk assessment and the current Safety Data Sheet.
Storage: Store in tightly sealed original containers in a cool, dry, well-ventilated area. Protect the product from moisture, high humidity, contamination, strong bases, and incompatible materials. Do not store the powder in direct contact with iron, brass, copper, aluminum, or mild-steel surfaces because the material can slowly corrode these metals. Maintain packaging integrity throughout the minimum three-year shelf-life period.
Spill and Leak Procedures: Prevent unnecessary personnel from entering the affected area and avoid generating airborne dust. Recover the powder using a suitable industrial vacuum or another low-dust collection method. Do not wash large quantities directly into drains because contact with water produces an acidic metal-salt solution. Transfer recovered material into clean, compatible, labeled containers and dispose of contaminated waste according to applicable regulations.
Handling Precautions: Wear suitable safety glasses or chemical goggles, protective gloves, and work clothing. Use dust-resistant respiratory protection when indicated by the workplace assessment. Do not eat, drink, or smoke in handling areas. Wash thoroughly after handling. Avoid anionic surfactants, strong bases, and unvalidated self-emulsifying ingredients during formulation. Consult the current Safety Data Sheet before commercial production, transport, or large-scale handling.
The official technical sheet states that the powder readily absorbs moisture, may slowly corrode several common metals, must not be used in aerosols, and should be formulated without anionic surfactants, strong bases, or incompatible self-emulsifying emulsifiers.
