[email protected]
CAS 7440-25-7 Tantalum molecular structure lightbox
CAS RN: 7440-25-7

Tantalum

Product Availability

Choose a grade to view its available package options.

15 package records10 with current stock9 grade groups
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250630 50X100mm Out of stock 8-10 business days Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250701 5g / 25g Out of stock 8-10 business days Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250106 5g / 25g Out of stock 8-10 business days Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20260503 5g / 25g Out of stock 8-10 business days Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250711 100g In stock Shanghai Inquiry
Batchno.20250801 1g In stock Shanghai, Shandong, Guangdong Inquiry
Batchno.20260502 25g In stock Shanghai, Shandong Inquiry
Batchno.20260322 5g In stock Shanghai, Shandong, Guangdong, Hebei Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20251224 5g / 25g / 100g / 500g Confirm by inquiry Shanghai Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20260426 5g / 25g / 100g / 500g Confirm by inquiry Shanghai, Shandong, Chongqing, Guangdong Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20251128 100g Out of stock 8-10 business days Inquiry
Batchno.20250409 1g In stock Shanghai, Shandong, Chongqing Inquiry
Batchno.20250207 25g In stock Guangdong Inquiry
Batchno.20251227 5g In stock Shanghai, Shandong, Guangdong Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250117 5g / 25g / 100g / 500g Confirm by inquiry Shanghai, Shandong Inquiry
  • Product code: SSC-183850
GET A QUOTE
Historical Factory Record

Historical Supply Reference

This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.

  • Pack sizes on record: 1g
  • Available purity: ≥98%
  • Inventory rows with stock: 0
  • Bulk packaging: confirmed by inquiry
Request Bulk Quote

Reference Pack Sizes

Reference pack sizes are shown below. Final availability, packaging and delivery schedule are confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 7440-25-7
Pack Size Recorded Purity Available Qty Ship From Inquiry
1g ≥98% 0 Out of Stock Beijing Inquiry

7440-25-7 / tantalum

Standard CAS: 7440-25-7 Multi CAS: Yes
Basic Information Physical Properties Computed Properties

Basic Information

CAS
7440-25-7
Multi CAS
Yes
Molecular Formula
Ta
Molecular Weight
180.947900
Exact Mass
180.948000
InChI
InChI=1S/Ta
InChIKey
GUVRBAGPIYLISA-UHFFFAOYSA-N

Physical Properties

Melting Point
5425 °F (NIOSH, 2024) 2996 °C 5425 °F
Boiling Point
9797 °F at 760 mmHg (NIOSH, 2024) 5429 °C 5425 °C 9797 °F
Density
16.65 (metal), 14.40 (powder) (NIOSH, 2024) - Denser than water; will sink 14.491 g/cu cm (powder); 16.6 g/cu cm (worked metal) 14.5 g/cm³ 16.65 (metal) 14.40 (powder)
Physical Description
Tantalum dust is a black odorless powder. mp: 2996 °C, bp: approx. 5250 °C. Density: 16.65 g/cm3. Insoluble in water. Tantalum oxide dust is a white, microcrystalline powder mp: 1800 °C. Density: 7.6 g/cm3. Insoluble in water. The mixture is listed as a toxic inhalation hazard by OSHA. Dry Powder, Other Solid BLACK SOLID IN VARIOUS FORMS. Steel-blue to gray solid or black, odorless powder. Metal: Steel-blue to gray solid or black, odorless powder.
Appearance
Silvery gray metal, body-centered cubic crystal structure CUBIC OR POWDER Gray, very hard, malleable, ductile metal Black powder; steel-blue-colored metal when unpolished, nearly platinum white when polished Metal: Steel-blue to gray solid or black powder.
State
Solid

Computed Properties

Structural Parameters

Heavy atom count
1
TPSA
0.0000

LogP / Solubility

Consensus LogP
0.0000
Log S (ESOL)
-0.96
Class (ESOL)
Very soluble
Log S (Ali)
-1.04
Class (Ali)
Soluble
Log S (SILICOS-IT)
-0.83
Class (SILICOS-IT)
Very soluble

ADME

GI absorption
High
BBB permeant
Yes
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-3.83

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Leadlikeness
No
Synthetic Accessibility
1

Customers Also Viewed

Get In Touch

Contact Us