Ammonium molybdate – a professional supplier to industry and laboratories
The ammonium molybdate tetrahydrate ((NH₄)₆Mo₇O₂₄·4H₂O) we produce, also known as ammonium heptamolybdate, offers:
– high chemical purity,
– competitive pricing,
– 24-hour delivery.
We are an experienced distributor of chemical raw materials, offering ammonium molybdate in various grades: technical, pure, and pro analysis (p.a.).
We include a certificate of analysis (CoA), a safety data sheet (SDS), and complete technical documentation with every shipment. We guarantee consistent quality across batches, competitive wholesale prices, and technical support.
Main applications: reagent in analytical chemistry (determination of phosphates and silicates), industrial catalysts, ceramic pigments, corrosion inhibitors, and micronutrient fertilizers.
Basic Specifications – Ammonium Molybdate Tetrahydrate
| Chemical name | Ammonium heptamolybdate tetrahydrate |
|---|---|
| Synonyms | Ammonium molybdate tetrahydrate |
| Chemical formula | (NH₄)₆Mo₇O₂₄·4H₂O |
| CAS Number | 12054-85-2 |
| EC Number (EINECS) | 235-017-4 |
| Molar mass | 1235.86 g/mol |
| Form | Colorless crystals or whitish powder |
| Available Purity Grades | Technical / Pure / p.a. / ACS reagent |
| Solubility | 43 g/100 mL H₂O (20°C) |
| Decomposition temperature | >100°C (water loss), complete decomposition >190°C |
| Mo content | 54–56% (anhydrous) |
| pH of a 5% solution | 5.0–6.5 |
| Packaging | 100 g / 250 g / 500 g / 1 kg / 5 kg / 25 kg |
| Documentation | SDS, CoA, Technical Specifications |
B2B Terms of Cooperation – Wholesale Ammonium Molybdate
Why Partner with Us?
- Wholesale deliveries—starting at 1 kg, with shipping throughout Poland and the EU
- Volume discounts – up to 15% on larger orders
- Batch consistency – every shipment includes a CoA and LOT number
- Short lead time – shipping within 24–48 hours
- Fixed-term contracts – framework agreements for 6–12 months
- Technical support – assistance with product selection
- Trade credit – flexible payment terms for regular customers
- Complete documentation – SDS, CoA
We serve the chemical, ceramic, pharmaceutical, and metallurgical industries, as well as research laboratories.
Do you need ammonium molybdate?
Contact us!
Ask about current prices, availability, and wholesale discounts. We’ll respond within 24 hours.
Ammonium molybdate—where to buy? Ask for a quote!
We offer free samples (100–250 g) for quality testing. For B2B customers, we prepare customized quotes based on order volume, documentation, and technical requirements.
Contact us—we’ll respond within 24 hours!
Phone: +48 724 967 482
Email: biuro@elpolap.com.pl
Address:
Nowa Wieś Królewska 46, Września County / PL
Business hours:
Monday–Friday: 8:00 a.m.–4:00 p.m.
Ammonium molybdate – price and pricing factors
The price of ammonium molybdate depends on:
Chemical purity: p.a. and ACS grades are more expensive than technical grade due to strict quality standards.
Order quantity: discounts of up to 15% for bulk orders over 50 kg.
Current molybdenum price: Mo prices on metal exchanges (LME, COMEX) directly affect production costs.
Documentation: Additional certifications (GMP, FDA) increase the final price.
Approximate prices:
- 100–500 g: 250–500 PLN
- 1–10 kg: 200–250 PLN/kg
- 50+ kg: 150–199 PLN/kg (custom pricing)
What is ammonium molybdate?
Chemical Characteristics
Ammonium molybdate tetrahydrate is an inorganic ammonium salt of molybdic acid with the formula (NH₄)₆Mo₇O₂₄·4H₂O, in which molybdenum has an oxidation state of +VI. It is a chemical reagent used in analytical chemistry to determine phosphates, silicates, and arsenic using spectrophotometric methods.
It is highly soluble in water (43 g/100 mL at 20°C), forming a slightly acidic solution (pH 5–6.5). In the presence of reducing agents, it produces a characteristic blue color (molybdenum blue).
Structure of the Compound
Ammonium heptamolybdate has a polyoxometalate structure—seven molybdenum atoms form a clustered anion [Mo₇O₂₄]⁶⁻, and six NH₄⁺ cations balance the charge. Its molar mass is 1235.86 g/mol, of which molybdenum accounts for 54–56% by mass.
The compound is stable at room temperature, but loses its water of crystallization above 100°C.
Physicochemical Properties
Physical Properties
Ammonium molybdate is a white or slightly yellowish crystalline powder. Pharmaceutical-grade (p.a.) has a purer white color than technical-grade. Solubility in water is 43 g/100 mL (20°C) and increases to 120 g/100 mL (100°C). Density: 2.498 g/cm³. The substance is hygroscopic—it must be stored in airtight containers.
Chemical Properties
In aqueous solutions, it forms various forms of molybdate ions depending on the pH. In an acidic environment, the [Mo₇O₂₄]⁶⁻ form predominates; in an alkaline environment, it converts to MoO₄²⁻.
In the presence of reducing agents (ascorbic acid, SnCl₂), it undergoes reduction with a characteristic blue color—a property used in the analysis of phosphates.
Applications of Ammonium Molybdate
Analytical chemistry
A key reagent for the spectrophotometric determination of phosphates. Phosphates react with ammonium molybdate to form phosphomolybdic acid, which produces a blue color upon reduction. This method is used in the analysis of water, soil, and fertilizers.
Also used for the determination of silicates and arsenic, as well as in ion chromatography.
Industry
Catalysis: a precursor for molybdenum catalysts in petrochemical processes (fuel hydrodesulfurization, hydroprocessing).
Ceramic pigments: a source of molybdenum in pigments that give ceramics red, orange, and yellow colors.
Metallurgy: an additive to steel that increases hardness and corrosion resistance.
Corrosion inhibitors: used in cooling systems and steam boilers.
Agriculture
Molybdenum is a micronutrient essential for leguminous plants. Ammonium molybdate is used in micronutrient fertilizers. A molybdenum deficiency manifests as leaf chlorosis and stunted growth.
Do you need this product?
Contact us!
Ask about current prices, availability, and wholesale discounts. We’ll respond within 24 hours.
Ammonium Molybdate Specifications
Available Purity Levels
Technical (tech.): min. 98%, for industrial applications
Pure: min. 99.0%, chemical industry
Analytical grade (p.a.): min. 99.5%, analytical laboratories
ACS reagent grade: highest purity, pharmaceutical industry
Quality Control
Each batch comes with a CoA containing:
- (NH₄)₆Mo₇O₂₄·4H₂O content: min. 99.0% (p.a.)
- Mo content: 54–56%
- pH of 5% solution: 5.0–6.5
- Chlorides: max. 30 ppm
- Heavy metals (Pb, Cu, Fe, Ni): < 10 ppm
Analysis in accordance with ISO/IEC 17025 and the European Pharmacopoeia.
Where can I buy ammonium molybdate?
Availability and Terms of Purchase
Ammonium molybdate can be purchased from Elpolap—a professional distributor and manufacturer of chemical raw materials. We serve universities, research institutes, laboratories, and companies in the chemical, ceramic, and metallurgical industries.
Delivery throughout Poland (24–48 hours) and the EU. For regular customers: volume discounts, trade credit (14/30/60 days), and a dedicated account manager.
Every order comes with complete documentation: VAT invoice, SDS, CoA, and technical specifications.
B2B Wholesale Inquiries
We prepare customized quotes tailored to the specifics of each order and certification requirements. We offer 6- to 12-month framework agreements to ensure stable supply.
Wholesale orders starting at 5 kg with full technical support.
Contact us to receive:
- A quote with a volume discount
- A delivery schedule
- A framework agreement
- Samples for testing
- Technical support
Do you need this product?
Contact us!
Ask about current prices, availability, and wholesale discounts. We’ll respond within 24 hours.
Safety and regulations
CLP/GHS Classification
Hazard statements:
- H302: Harmful if swallowed
- H319: Causes eye irritation
- H315: Causes skin irritation
- H335: May cause respiratory irritation
Toxicity: LD50 ~330 mg/kg (moderately toxic). The risk is minimal when used properly with protective equipment.
Storage
Store in tightly closed containers in a dry room (15–25°C), away from acids, bases, and flammable materials. Wear gloves, safety goggles, and a lab coat.
TransportTechnical Documentation
Safety Data Sheet (SDS)
We include an up-to-date SDS in Polish with every shipment, compliant with REACH and CLP. The SDS contains 16 sections: substance identification, hazards, first aid measures, emergency response, storage, and physicochemical and toxicological properties.
Certificate of Analysis (CoA)
Each batch comes with a Certificate of Analysis (CoA) containing the following test results: main ingredient content, Mo, pH, chlorides, sulfates, and heavy metals. Upon request: GMP, FDA, and Halal/Kosher certificates.
Identification Numbers
- CAS: 12054-85-2
- EINECS: 235-017-4
- Molar mass: 1235.86 g/mol
- IUPAC name: hexaammonium heptamolybdate tetrahydrate
Registered in PubChem (CID: 24519), ECHA, and NIOSH.
Frequently Asked Questions (FAQ)
What is the formula for ammonium molybdate?
The chemical formula for ammonium heptamolybdate tetrahydrate is (NH₄)₆Mo₇O₂₄·4H₂O. This compound is also known as ammonium heptamolybdate due to the presence of seven molybdenum atoms in the molybdate anion. Its molar mass is 1235.86 g/mol, of which molybdenum accounts for approximately 54–56% of the compound’s mass on an anhydrous basis.
The polyoxometalate structure consists of seven MoO₆ octahedra linked by shared oxygen atoms, and six ammonium cations (NH₄⁺) counterbalance the negative charge of the [Mo₇O₂₄]⁶⁻ anion.
Is ammonium molybdate toxic?
Ammonium molybdate tetrahydrate is a moderately toxic substance. The LD50 for rats following oral administration is approximately 330 mg/kg body weight, which classifies it as harmful if swallowed (H302).
The compound is irritating to the skin and eyes and may cause respiratory tract irritation if dust is inhaled. When used properly with personal protective equipment (nitrile gloves, safety goggles, lab coat), the health risk is minimal. In case of skin contact, rinse with plenty of water for at least 15 minutes.
What is ammonium molybdate used for in chemical analysis?
Ammonium molybdate is one of the most important reagents in analytical chemistry, used primarily for the spectrophotometric determination of phosphates.
In an acidic environment, phosphates react with ammonium molybdate to form yellow phosphomolybdic acid, which, upon reduction, produces an intense blue color known as phosphomolybdenum blue. This method is widely used in the analysis of water, soil, fertilizers, and biological materials. Ammonium molybdate is also used for the determination of silicates and arsenic, as well as in ion chromatography as a detection reagent.
How much does ammonium molybdate cost?
The price of ammonium molybdate tetrahydrate depends on its chemical purity, order quantity, and current molybdenum prices on metal exchanges.
Approximate prices: 100–500 g packages cost 80–180 PLN; orders of 1–10 kg cost 120–250 PLN/kg; and wholesale orders over 50 kg are priced individually (80–150 PLN/kg). Products with p.a. purity are more expensive than those with technical purity. Please contact us for a current quote.
Does ammonium molybdate dissolve in water?
Yes, ammonium molybdate tetrahydrate dissolves well in water. Solubility at 20°C is approximately 43 g/100 ml of water and increases with temperature.
At 100°C, it reaches approximately 120 g/100 mL. When dissolved, it forms a solution with a pH of 5.0–6.5. The compound is slightly soluble in alcohols, which makes it particularly useful in laboratory and industrial applications.
How should ammonium molybdate be stored?
Ammonium molybdate tetrahydrate should be stored in tightly sealed containers in a dry, cool room at a temperature of 15–25°C.
The product is hygroscopic; therefore, once opened, it is recommended to store it in a desiccator. Under proper conditions, the product has a shelf life of at least 3 years.
Where can you buy ammonium molybdate?
Ammonium molybdate tetrahydrate can be purchased directly from Elpolap—a manufacturer and distributor of chemical raw materials. We serve universities, laboratories, and industrial facilities.
We offer 24–48-hour delivery within Poland and the EU. We include a CoA, SDS, and VAT invoice with every order.
What are the industrial applications of ammonium molybdate?
Ammonium molybdate is used as a catalyst precursor in the petrochemical industry, in the production of ceramic pigments and metal alloys, and as a micronutrient in fertilizers.
It is also used as a corrosion inhibitor in industrial systems.
Does ammonium molybdate require special transport?
Ammonium molybdate is not classified as a dangerous good under ADR. It does not require special transport labeling.
Containers must be leak-proof and mechanically secured. An SDS and shipping documents are included with the shipment.
What is the difference between ammonium molybdate and sodium molybdate?
Ammonium molybdate ((NH₄)₆Mo₇O₂₄·4H₂O) has a polymeric structure and is used primarily in chemical analysis and catalysis.
Sodium molybdate (Na₂MoO₄·2H₂O) has a simpler structure, better solubility, and is used primarily in fertilizers and as a corrosion inhibitor.
Contact us for a quote
Get:
- A quote with a volume discount
- A free sample for testing
- Documentation (SDS, CoA, instructions)
- Technical support regarding dosing
724 967 482
kontakt@elpolap.com.pl
Nowa Wieś Królewska 46,
62-304 Nowa Wieś Królewska
Monday–Friday: 8:00 a.m.–4:00 p.m.
Sales department hours: Monday – Friday, 8:00 a.m. – 4:00 p.m.
We respond to inquiries within 24 business hours.
This information is for technical and sales purposes only. It does not constitute an offer within the meaning of the Civil Code. All specifications and technical data are subject to change without prior notice.