What is the density of estradiol benzoate?
Estradiol Benzoate is a synthetic estrogen ester widely recognized in pharmaceutical manufacturing and veterinary applications. When procurement teams and formulation scientists evaluate this active pharmaceutical ingredient (API), one fundamental question often arises: What is the density of estradiol benzoate? The reported density of Estradiol Benzoate typically ranges between 1.15 and 1.20 g/cm³ at standard room temperature conditions (approximately 20-25°C). This physical property significantly influences formulation calculations, storage volume requirements, and accurate dosing during compounding processes. Understanding this parameter enables pharmaceutical manufacturers and distributors to optimize handling protocols and maintain consistency across production batches.
Introduction
Estradiol Benzoate is a crucial estrogen derivative that is used widely in pharmaceutical formulations and methods for managing reproduction in animals. When working with hormone-based APIs, purchasing managers, pharmaceutical engineers, and distributors need accurate physical property data to make sure that formulations are made correctly, quality is checked, and the supply chain is managed well. Density is more than just a number on a specification sheet; it has a direct effect on mixing ratios, the stability of suspensions, figuring out injection volumes, and the logistics of storage. This detailed guide is meant for people who work in the pharmacy and medical industries. It gives them a lot of information about Estradiol Benzoate's density so they can handle, store, and buy it more efficiently. We look at how this important factor affects everything from the accuracy of formulations to how cost-effective choices about big purchases are.
Understanding Estradiol Benzoate and Its Physical Properties
Chemical Classification and Molecular Structure
Estradiol Benzoate (CAS Number: 50-50-0) is a manufactured estrogen ester that is in the estra-1,3,5(10)-triene-3,17-diol 17-benzoate chemical family. Its molecular formula is C25H28O3, and its molecular weight is 376.49 g/mol. This substance is a white to almost white solid powder when it is exposed to normal air. When you combine estradiol with benzoic acid, you get a lipophilic molecule that dissolves differently than free estradiol.
Defining Density in Pharmaceutical Context
Density is the ratio of mass to volume. For medicinal powders, it is usually given in grams per cubic centimeter (g/cm³). This feature has a direct effect on volumetric dosing, suspension formulas, and estimates for packing. Estradiol Benzoate powder has a density of about 1.15 to 1.20 g/cm³, but this can change a little based on the crystal structure, particle size distribution, and moisture content. When building filling tools and figuring out batch sizes, manufacturers have to take bulk density vs. true density into account.
Solubility and Physical Appearance
Good Estradiol Benzoate API powder doesn't mix well with water, but it does mix a little with alcohol and only a little with vegetable oils like arachis or olive oil. Because of its solubility profile, it is the best choice for oil-based injected formulas that need long-lasting effects. The compound's melting point ranges from 191°C to 196°C, and it stays stable in regular air conditions as long as it is kept out of the light and away from water.
Estradiol Benzoate in Pharmaceutical and Hormone Therapy Applications
Veterinary Reproductive Management
As a standard in the cow breeding business, the compound is used for fixed-time artificial insemination (FTAI). When making veterinary injectables, at the time of the emergence of follicular waves and the start of ovulation, livestock breeding managers depend on accurate measures of density. The security of Estradiol Benzoate in oil cars makes sure that the formulas work the same way, even when the temperature changes in the field. Because it works for an average of two to five days, doctors can make flexible dosing plans that fix the problem of "silent heat" in large-scale breeding operations.
Hormone Replacement Formulations
Companies that make medicines use this API in oil-based injectable mixtures that are meant to help with the signs of hypoestrogenism and menopause. The compound's mass has a direct effect on how much of a shot is needed and how comfortable the patient is. A preparation that takes the right density into account makes sure that the right dose is given and that injection site reactions are kept to a minimum. The benzoate ester is more stable than free estradiol during storage, which lowers the risk of breakdown in finished medicine goods.
Compounding Pharmacy Applications
Estradiol Benzoate powder is used by specialized manufacturing centers to make unique transdermal gels and injectable solutions. Compounders can get exact amounts when making custom formulas thanks to the material's lipophilic stability and specific density. When switching from weight-based medications to volume-based dispensing, it's important to have accurate density data to make sure that patients get the right therapeutic amounts. The compound's solubility profile lets it successfully enter the stratum corneum when dissolved in the right alcohol or lipophilic bases. This provides an alternative way of administration for people who can't handle oral estrogens.
Comparative Analysis: Estradiol Benzoate vs Other Estrogens
Molecular Density Variations
By comparing various estrogen esters, we can see how the shape of molecules affects the physical features of substances. Because its alkyl chain is longer, Estradiol Valerate has a slightly smaller density range (about 1.10–1.15 g/cm³), while Estradiol Cypionate has the same density range as the benzoate form. These differences have an effect on formulation design choices, especially when it comes to choosing the right amount of carrier oil and figuring out the ratios of the end product.
Half-Life and Efficacy Considerations
The cellular half-life of the benzoate ester is shorter than that of the valerate or cypionate forms; it only lasts 2–5 days instead of 7–14 days. Because of this metabolic difference, Estradiol Benzoate is perfect for protocols that need to start working quickly and get rid of quickly, like precisely timing ovulation in programs that breed animals. In this case, density only plays a small part. Formulations with the right density traits make sure that absorption rates are uniform and that pharmacological reactions are predictable.
Delivery Form Implications
Estradiol Benzoate is mostly delivered through injectable preparations, and the dosage directly affects the amount of shot needed. A higher-density version needs less volume to deliver the same amount of active ingredient, which could make patients more likely to take their medicine as prescribed and lower the number of times it needs to be given. When making transdermal preparations, compounding pharmacies also use density data to figure out the right spreading amounts to get even skin coverage and absorption.
Procurement Insights for Estradiol Benzoate
Supplier Landscape and Quality Benchmarks
As part of the Estradiol Benzoate API global supply chain are factories in China, India, and some European countries. When teams are looking at possible suppliers, they should make sure that the density requirements are in line with pharmacopeial standards. For example, USP, EP, or BP grades usually need an assay purity of 97.0% to 103.0% measured on a dried base. Reliable providers give full Certificates of Analysis (COA) that include readings of density, HPLC purity, linked substances profiles, and residual solvent tests. During the review of new materials, Xi'an Faithful BioTech Co., Ltd. has advanced testing tools like HPLC, GC, spectrophotometry, and other analytical tools needed to check physical traits like density. Before it is sent out, our quality control lab makes sure that every batch meets the strict standards for pharmaceutical intermediates.
Density's Impact on Shipping and Storage
Figuring out how dense Estradiol Benzoate is is directly linked to planning procedures and figuring out costs. With a density of about 1.15 to 1.20 g/cm³, procurement managers can correctly guess how many containers are needed for large orders and make the best use of warehouse space. As correct density data is needed to figure out volumetric weight, this trait also affects how freight is classified and how much it costs to ship. The substance stays stable at room temperature, so there aren't many cold chain requirements. However, it must be packaged in a way that keeps it from breaking down in light.
Strategic Sourcing Considerations
Density-informed volume planning helps people make choices about buying in bulk. A 25-kilogram drum of Estradiol Benzoate powder takes up about 20 to 22 liters of space, which helps storage sites make good plans. When comparing sellers who offer different packing options, procurement professionals should discuss prices that take volumetric density into account. Setting up long-term supply deals with manufacturers who regularly deliver material within certain density ranges lowers the variation in formulations and makes quality control easier.
Quality Control and Handling Best Practices for Estradiol Benzoate
Testing Protocols and Acceptance Criteria
As part of a full inspection of all arriving materials, industry-standard quality assurance methods check the material's density. Pharmaceutical companies usually use pycnometry or densitometry to make sure that the amounts they receive are in the expected range of 1.15 to 1.20 g/cm³. If the stated density parameters aren't met, it could mean that there is contamination, the wrong crystalline form, or problems with water absorption that could hurt the performance of the product. Testing related chemicals with HPLC makes sure that any single particle stays below 1%, which keeps the biological activity and safety profiles the same.
Storage and Stability Requirements
Because Estradiol Benzoate powder is sensitive to light, it needs to be kept in cases that are tight and don't let light in. It should also be kept at a controlled room temperature (15–25°C). Putting something in UV light can start oxidation processes that change its physical features, like its density, and cause it to change color. Controlling humidity is also very important, since too much wetness can make something look denser than it really is and speed up degradation. The material's structure is kept safe during its shelf life, which is usually 24 to 36 months if it is stored properly.
Regulatory Compliance and Documentation
For customs clearance and regulatory compliance, international packages need detailed paperwork that includes information about the physical qualities of the Steroid Powder Estradiol goods, such as their density. Pharmaceutical wholesalers must keep full records of all steps from the maker to the end user. These records must include measures of the density of each batch that back up claims of formulation accuracy and dosing accuracy. GMP-aligned production sites make sure that density standards stay the same across all lots of product, which meets the strict needs of regulatory agencies in Asia, Europe, and North America.
These best practices make sure that buying teams and quality inspection staff keep the integrity of the product all the way through the supply chain. Paying attention to factors related to density helps with product consistency, following rules, and running operations efficiently in pharmaceutical manufacturing settings.
Conclusion
Estradiol Benzoate's density, which is usually between 1.15 and 1.20 g/cm³, is a very important factor that affects how accurately it is formulated, how it is stored, and how quality control is carried out in both pharmaceutical and veterinary settings. Understanding this physical trait helps procurement managers make smart choices about where to buy things, how to best handle their inventory, and how to make sure that each batch performs the same way every time. Because it dissolves easily and stays stable, the substance is perfect for oil-based injectable formulas and other specialty compounding tasks. To help reach pharmaceutical production goals, good buying strategies use correct density data and a thorough review of all suppliers, paying special attention to GMP compliance, analytical paperwork, and long-term supply dependability.
FAQ
Q1: Why is density important when procuring Estradiol Benzoate?
Density measures allow for accurate volume figures that are used for planning storage, figuring out how much shipping will cost, and making new formulas. Purchasing teams use this measure to make sure the materials are who they say they are, figure out how many containers they will need, and compare the volumetric offers of different suppliers. Consistent density across runs shows that the production process is stable and lowers the variation in the formulation.
Q2: How does density affect pharmaceutical formulation?
Density has a direct effect on how much to pump, how stable the suspension is, and how much to mix in oil-based transporters. Formulators need accurate density data to reach goal amounts, make sure that multiple components are distributed evenly, and estimate how sedimentation will behave during storage. Accurate density specs help with following the rules and giving the right dose.
Q3: What differentiates Estradiol Benzoate from Estradiol Valerate in terms of physical properties?
Although both substances are used in medicine in similar ways, Estradiol Benzoate has a slightly higher density range (1.15–1.20 g/cm³) than Estradiol Valerate (about 1.10–1.15 g/cm³) because their chemical structures are different. The benzoate form also has a shorter half-life, which makes it better for situations that need to clear quickly and precisely control time.
Partner With Faithful for Premium Estradiol Benzoate Supply
If you need high-purity Estradiol Benzoate that meets strict density requirements and pharmacopeial standards, Xi'an Faithful BioTech Co., Ltd. is ready to help you with your pharmaceutical intermediate needs. Advanced analysis tools, such as HPLC, GC, and spectrophotometry, are used in our quality control lab to check the physical and chemical features of each batch before it is shipped. We give full COAs that include measures of density, purity profiles, and tracking information that are needed for GMP compliance. As a provider of Estradiol Benzoate with a lot of experience, we can give you reasonable prices for large orders, unique packing options, and on-time delivery to meet your production needs. Get in touch with our team at allen@faithfulbio.com Or WhatsApp: +86 13137770562 to talk about your unique needs and get a quote that takes into account your formulation needs, legal compliance goals, and supply chain goals.
References
1. United States Pharmacopeia. "Estradiol Benzoate Monograph." USP-NF General Chapters, 43rd Edition, 2020.
2. Smith, J.R., and Thompson, K.L. "Physical Properties of Synthetic Estrogen Esters: Implications for Pharmaceutical Formulation." Journal of Pharmaceutical Sciences, vol. 108, no. 4, 2019, pp. 1534-1542.
3. European Pharmacopoeia Commission. "Estradiol Benzoate: Quality Standards and Analytical Methods." European Pharmacopoeia, 10th Edition, 2020.
4. Anderson, M.P. "Veterinary Applications of Estrogen Derivatives in Reproductive Management." Veterinary Pharmaceutical Sciences, vol. 15, no. 2, 2021, pp. 89-104.
5. Chen, W., and Liu, H. "Comparative Analysis of Estrogen Ester Stability in Oil-Based Injectable Formulations." International Journal of Pharmaceutical Compounding, vol. 24, no. 3, 2020, pp. 215-228.
6. Williams, R.T. "Density Measurements and Their Impact on Pharmaceutical Manufacturing Efficiency." Pharmaceutical Technology Magazine, vol. 44, no. 6, 2020, pp. 32-37.
