Boron(CAS 7440-42-8)
| Purity | Grade | Package | Stock | Price | Quantity |
| 94%+, 5μm, amorphous | RG | 5G | In Stock | 10 USD
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| 94%+, 5μm, amorphous | RG | 25G | In Stock | 25 USD
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| 94%+, 5μm, amorphous | RG | 100G | In Stock | 88 USD
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| 94%+, 5μm, amorphous | RG | 500G | In Stock | 398 USD
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| 94%+, 5μm, amorphous | RG | 2.5KG | In Stock | 1792 USD
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| 99% | RG | 5G | In Stock | 9 USD
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| 99%, D50≤20μm, amorphous | RG | 5G | In Stock | 12 USD
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| 99%, D50≤20μm, amorphous | RG | 25G | In Stock | 20 USD
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| 99%, D50≤20μm, amorphous | RG | 100G | In Stock | 55 USD
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| 99%, D50≤20μm, amorphous | RG | 500G | In Stock | 238 USD
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| 99%, D50≤20μm, amorphous | RG | 2.5KG | In Stock | 1710 USD
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| 99.9% metals basis,D50≤20μm | Extra Pure | 1G | In Stock | 4 USD
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| 99.9% metals basis,D50≤20μm | Extra Pure | 5G | In Stock | 12 USD
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| 99.9% metals basis,D50≤20μm | Extra Pure | 25G | In Stock | 35 USD
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| 99.9% metals basis,D50≤20μm | Extra Pure | 100G | In Stock | 104 USD
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| 99.9% metals basis,D50≤20μm | Extra Pure | 500G | In Stock | 814 USD
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| 99.99% metals basis | Extra Pure | 250MG | In Stock | 5 USD
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| 99.99% metals basis | Extra Pure | 1G | In Stock | 16 USD
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| 99.99% metals basis | Extra Pure | 5G | In Stock | 42 USD
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| 99.99% metals basis | Extra Pure | 25G | In Stock | 244 USD
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| 99.99% metals basis | Extra Pure | 100G | In Stock | 854 USD
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| 99.999% metals basis | Ultra Pure | 100MG | In Stock | 9 USD
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| 99.999% metals basis | Ultra Pure | 250MG | In Stock | 17 USD
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| 99.999% metals basis | Ultra Pure | 1G | In Stock | 41 USD
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| 99.999% metals basis | Ultra Pure | 5G | In Stock | 68 USD
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| 99.999% metals basis | Ultra Pure | 25G | In Stock | 475 USD
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Available NMR Spectrum
Verified In Stock
Fast Shipping ISO 9001
Quality System
Applications of 7440-42-8
Boron has diverse applications across multiple industries:
- Glass and Ceramics: Used as a flux in glassmaking and to improve the thermal and chemical resistance of ceramics.
- Metallurgy: Added to steel as ferroboron to increase hardness and strength.
- Semiconductors: Utilized as a doping agent in silicon and germanium to modify electrical conductivity.
- Agriculture: Employed as a micronutrient in fertilizers to promote plant growth.
Physical and chemical properties of 7440-42-8
Boiling Point |
4,000 °C |
|---|---|
Density |
Amorphous, 2.350 g/cu cm; alpha-rhombohedral, 2.46 g/cu cm; alpha-tetragonal, 2.31 g/cu cm; beta-rhombohedral, 2.35 g/cu cm |
Exposure Limits |
ACGIH: TWA 2 mg/m3; STEL 6 mg/m3 |
Melting Point |
2,075 °C |
Merck |
13,1333 |
Molecular Formula |
B |
Molecular Weight |
10.81 |
resistivity |
1.5E12 μΩ-cm, 20 °C |
Stability |
Stable. Substances to be avoided include strong oxidizing agents and strong acids. May decompose on exposure to air - store under nitrogen. Highly flammable. |
Storage condition |
no restrictions. |
Vapour Pressure |
1.56X10-5 atm (0.0119 mm Hg) at 2140 °C |
Water Solubility |
H2O: soluble |
Q&A for CAS 7440-42-8
1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.
2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.
3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.
4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.
5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.
6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.
7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.
8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.
9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.
10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.
11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.
12. What payment methods do you accept?
We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.
Download SDS of 7440-42-8
Pictograms |
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|---|---|
Signal Word |
Warning |
Hazard Statements |
H302 Harmful if swallowed |
Safety Data Sheet |
Download COA of 7440-42-8
Operate under the ISO 9001 system
