Dangerous Goods
structure of 7440-42-8

Boron(CAS 7440-42-8)

CAS No.: 7440-42-8 Brand: MolBest
M. Ft.: B Cat. No: G1335280
M. Wt.: 10.81 MDL: MFCD00134034
Storage: Store in a cool,dry area. Use: For laboratory research use only
HS CODE: 2804500010 UN No.: UN 3178 4.1 /PG II
Purity Grade Package Stock Price Quantity
94%+, 5μm, amorphous
Documents:COASDS
RG 5G In Stock 10 USD
94%+, 5μm, amorphous
Documents:COASDS
RG 25G In Stock 25 USD
94%+, 5μm, amorphous
Documents:COASDS
RG 100G In Stock 88 USD
94%+, 5μm, amorphous
Documents:COASDS
RG 500G In Stock 398 USD
94%+, 5μm, amorphous
Documents:COASDS
RG 2.5KG In Stock 1792 USD
99%
Documents:COASDS
RG 5G In Stock 9 USD
99%, D50≤20μm, amorphous
Documents:COASDS
RG 5G In Stock 12 USD
99%, D50≤20μm, amorphous
Documents:COASDS
RG 25G In Stock 20 USD
99%, D50≤20μm, amorphous
Documents:COASDS
RG 100G In Stock 55 USD
99%, D50≤20μm, amorphous
Documents:COASDS
RG 500G In Stock 238 USD
99%, D50≤20μm, amorphous
Documents:COASDS
RG 2.5KG In Stock 1710 USD
99.9% metals basis,D50≤20μm
Documents:COASDS
Extra Pure 1G In Stock 4 USD
99.9% metals basis,D50≤20μm
Documents:COASDS
Extra Pure 5G In Stock 12 USD
99.9% metals basis,D50≤20μm
Documents:COASDS
Extra Pure 25G In Stock 35 USD
99.9% metals basis,D50≤20μm
Documents:COASDS
Extra Pure 100G In Stock 104 USD
99.9% metals basis,D50≤20μm
Documents:COASDS
Extra Pure 500G In Stock 814 USD
99.99% metals basis
Documents:COASDS
Extra Pure 250MG In Stock 5 USD
99.99% metals basis
Documents:COASDS
Extra Pure 1G In Stock 16 USD
99.99% metals basis
Documents:COASDS
Extra Pure 5G In Stock 42 USD
99.99% metals basis
Documents:COASDS
Extra Pure 25G In Stock 244 USD
99.99% metals basis
Documents:COASDS
Extra Pure 100G In Stock 854 USD
99.999% metals basis
Documents:COASDS
Ultra Pure 100MG In Stock 9 USD
99.999% metals basis
Documents:COASDS
Ultra Pure 250MG In Stock 17 USD
99.999% metals basis
Documents:COASDS
Ultra Pure 1G In Stock 41 USD
99.999% metals basis
Documents:COASDS
Ultra Pure 5G In Stock 68 USD
99.999% metals basis
Documents:COASDS
Ultra Pure 25G In Stock 475 USD
Your region is eligible for ordering.
Should you have any questions, please contact us by Email.
Batch COA
Available
NMR Spectrum
Verified
In Stock
Fast Shipping
ISO 9001
Quality System

Quick Links

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

Signal Word

Warning

Hazard Statements

H302 Harmful if swallowed

Safety Data Sheet

Download COA of 7440-42-8

Operate under the ISO 9001 system