Other name: Niobium hydroxide oxide
CAS no. : 37349-30-7
EINECS no. : 253-482-1
Molecular formula: Nb(OH)5; H3NbO4; Nb [NbO4] 4
Niobium hydroxide property: also known as niobic acid, and tantalic acid together commonly known as earth acid. In fact, it is hydrated niobium oxide Nb2O5·xH2O, in which the number of hydration depends on the preparation method, aging degree and other factors. Hydrogen niobium oxide in 150 ~ 200 ℃ will remove most of the water, but the rest of the water and niobium oxide in combination with very strong, must be heated to a temperature of 400 ~ 400 ℃ or more to get final removal of all the water into Nb2O5. Niobium hydroxide has a hermaphroditic property, which is decomposed in acidic medium by Nb(OH)5Nb(OH)4+ OH -, and in alkaline medium by Nb(OH)5NbO3 – + h+ 2H2O. Niobium hydroxide is insoluble in water, difficult to dissolve in HCl, HNO3 and other inorganic acids, easy to dissolve in fluorohydric acid, oxalic acid, citric acid and other organic oxygen-containing acids. Niobium hydroxide is obtained by hydrolysis, and niobium hydroxide can be obtained by hydrolysis of various niobium compounds. Niobium hydroxide is the raw material for the preparation of various niobium compounds.
Other name: tantalum boride (1:2)
CAS no. : 12007-35-1
EINECS no. : 234-234-5
Molecular formula: B2Ta.
Molecular weight: 202.572
CAS no. : 12039-79-1
EINECS no. : 234-902-2
Molecular formula: H6Si2Ta.
Molecular weight: 243.16654
Other name : niobiumbago (NBB); boranylidyneniobium
CAS no. : 12653-77-9; 12045-19-1
EINECS no. : 234-958-8
Molecular weight: 103.7174.
Melting point: 3050℃
Other name: Molybdenum silicide
Molecular formula: MoSi2
CAS number: 12136-78-6
Molecular weight: 152.11
Melting point: 2030 ° C
Density: 6.24g / cm3
English alias: Tantalum mononitride; nitridotantalum; nitrogen (-3) anion; tantalum (+5) cation
CAS number: 12033-62-4
EINECS No. 234-788-4
Molecular formula: N5Ta3
Molecular weight: 194.95
English name: Niobium metaphosphate
Chemical formula: Nb (PO3) 5
Molecular weight: 487.90
Properties: sodium biphosphate glass, white powder, insoluble in water, PH value: 3.8
Chemical name: black titanium, titanium black, black titanium powder, titanium oxide,
English name: Tilox Black (South Korea); titanium black;
Magneli phase; Sub-oxidation Ti2O
Pigment Properties: Blue Black Powder
Chemical composition: Ti4O7
Other name: Niobium(IV) selenide, Niobium selenide; Columbium selenide; diselenoxoniobium; niobium(+4) cation; selenium(-2) anion
CAS no. : 12034-77-4
EINECS no. : 234-811-8
Molecular weight: 250.8264.
Density (g/mL,25) : 6.3
English alias: TITANIUM CARBONITRIDE (7:3); TI (C/N) 30/70 a; TI (C/N) 30/70 b; TI (C/N) 30/70 C; TI (C/N) 50/50 a; TI (C/N) 50/50 b; TI (C/N) 50/50 C; Titanium carbon nitride; TiCN
CAS no. : 12654-86-3
Molecular weight: 121.75
Density: 5.08 g/mL at 25 ℃ (lit.)
Melting point: > 350 ℃ (lit.)
Molecular formula: ZrV2O7.
Molecular weight: 315.7.
CAS no. : 13981-20-9
Appearance: yellow powder
Used in functional ceramics, structural ceramics and other aspects as pigments.
- The use of temperature: 400-1080 ℃
- The coefficient of linear expansion: – 10 x 10-6 ℃ – 1