oxo[(oxoalumanyl)oxy]alumane

• ChemBase ID: 102051
• Molecular Formular: Al2H2O3
• Molecular Mass: 103.977156
• Monoisotopic Mass: 103.96347118
• SMILES: O=[AlH]O[AlH]=O
• Canonical SMILES: O=[AlH]O[AlH]=O
• InChI: InChI=1S/2Al.3O
• InChIKey: TWNQGVIAIRXVLR-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: oxo[(oxoalumanyl)oxy]alumane
• IUPAC Traditional name: oxo[(oxoalumanyl)oxy]alumane; aluminium oxide
• Synonyms: Aeroxide® Alu C; Sapphire; MP ALUMINUM OXIDE 1-3 mm; MP ALUMINA N ACTIVITY I; MP ALUMINA DCC, 50-200 μM, 60Å; MP DCC PACKAGE 1: ALUMINA; MP ALUMINA A ACTIVITY SUPER I; MP ALUMINA B 18-32 μM, ACTIVE; MP ALUMINA ACTIVITY II-III; MP ALUMINA A-TLC; MP ALUMINA B ACTIVITY I; MP ALUMINA N, ACT I FOR PYROGEN REMOVAL; MP ALUMINA B-TLC; MP ALUMINA N-TLC; MP ALUMINA N SUPER I; Aluminium oxide; Alumina; aluminium(III) oxide; MP ALUMINUM OXIDE; MP ALUMINA N, 32-63 μM, ACTIVE; MP ALUMINA N; MP ALUMINA N, ACTIVE; MP ALUMINA A, ACTIVE; MP ALUMINUM OXIDE NEUTRAL H15152; MP ALUMINA B, ACTIVE; ALUMINA C; MP ALUMINA B ACTIVITY SUPER I; MP ALUMINA A SUPER I; MP ALUMINA G-TLC; MP ALUMINA A, ACTIVITY I, 63-200 μM; Aluminum oxide; Aluminum oxide without Fluorescence; CAMAG 506-C-I; Activated alumina, weakly acidic; Inhibitor removers; Aluminum oxide, mesoporous; 氧化铝分散体; 蓝宝石; 矾土; 氧化铝; 无荧光性氧化铝; 弱酸性活性氧化铝; 抑制剂清除剂; 氧化铝; 介孔氧化铝

Database IDs

• CAS Number: 1344-28-1
• EC Number: 215-691-6
• MDL Number: MFCD00003424; MFCD00081548
• PubChem SID: 24853275; 24852104; 24883250; 24890574; 24860715; 24851949; 24873971; 24860720; 24854054; 24873970; 24859187; 24845827; 24860729; 24878787; 24890585; 24860724; 24846974; 24895810; 162088037; 24883240; 24890555; 24851947; 24882698; 24860726; 24890619; 24845910; 24879232; 24860722; 24858514; 24891058; 24856242; 24851917; 24858711; 24845314; 24865888; 24860731; 24856076; 24860717
• PubChem CID: 14769

CALCULATED PROPERTIES

• H Acceptors: 2
• H Donor: 0
• LogD (pH = 5.5): 2.4684
• LogD (pH = 7.4): 2.4684
• Log P: 2.4684
• Molar Refractivity: 4.236 cm^3
• Polarizability: 6.522983 Å^3
• Polar Surface Area: 43.37 Å^2
• Rotatable Bonds: 2
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: calcined; dispersion; fused; granular; liquid (suspension); nanoparticles; nanopowder; nanowires; pellets; pieces; powder; single crystal substrate; sintered
• Melting Point: 2040 °C(lit.); ca. 2072 °C
• Boiling Point: ca. 2980 °C
• Flash Point: 12 °C; 204.8 °F; 53.6 °F; 96 °C
• Auto Ignition Point: 590 °C (1,094 °F); 932 °F
• Density: 0.79 g/cm3 at 25 °C; 1.02 g/mL at 25 °C; 1.06 g/mL at 25 °C; 3.94 g/cm^3 at 20 °C
• Vapor Pressure: 0 hPa at 20 °C; 17 mmHg ( 20 °C)
• Vapor Density: <1 (vs air)
• Conductivity: <1 mS/cm
• pH: ~6.0 ( in H2O); 4.0-5.0 (20 °C, 10% in H2O); 4.5±0.5; 4.5±0.5 ( in H2O); 5-7; 7.0±0.5; 7.0±0.5 ( in H2O); 7.0±1.0; 7.0-8.0 (20 °C, 10% in H2O); 8-10; 9.5±0.5; 9.5±0.5 ( in H2O)
• Semiconductor Properties: <0001>

Safety Information

• Storage Condition: Room Temperature (15-30°C)
• RTECS: BD1200000
• European Hazard Symbols: Flammable (F); Irritant (Xi)
• UN Number: 1219
• German water hazard class: 1; 3; nwg
• Hazard Class: 3
• Packing Group: 2
• Risk Statements: 11-36-67; 36/37/38; R:15-17
• Safety Statements: 16-26; 26-36; S:7/8
• EU Hazard Identification Number: 11
• GHS Pictograms: GHS02; GHS07
• GHS Signal Word: Danger; Warning
• GHS Hazard statements: H225-H319-H336; H315-H319-H335
• GHS Precautionary statements: P210-P261-P305 + P351 + P338; P261-P305 + P351 + P338
• Personal Protective Equipment: Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter; Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US); Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RID/ADR: UN 1219 3/PG 2

Product Information

• Purity: ≥98% Al2O3 basis; ≥98.0%; ≥99%; 99%; 99.5% trace metals basis; 99.8% trace metals basis; 99.9%; 99.99%; 99.99% trace metals basis; 99.998% trace metals basis
• Concentration: 20 wt. % in H2O; 20 wt. % in isopropanol; 5 wt. % in H2O
• Grade: activated; Brockmann I; CP; for complexometry; for drying; puriss.; purum p.a.; SAJ special grade; standard grade
• Particle Size: ~150 mesh; <25 nm (XRD); <50 nm (BET); <50 nm (DLS); <50 nm (TEM); ≤6 mm; 0.05-0.15 mm; 1/4-1/2 in.; -100 mesh; 100-200 mesh; 100-325 mesh; 100-400 mesh; 150-325 mesh; 200-325 mesh; 2-5 mm; 3 mm; -325 mesh; 4.4 μm (avg.); 5 μm; 5.65 μm (avg.); 6-12 mesh; 8-14 mesh
• Pore Size: 3.8 nm average pore size; 58 Å; 58 Å pore size; 6.5 nm pore size
• Description: Crystallographic D spacing ((0001) - c plane: 2.165 Angstrom); Crystallographic D spacing ((1011) - s plane: 1.961 Angstrom); Crystallographic D spacing ((1040) - m plane: 1.375 Angstrom); Crystallographic D spacing ((1102) - r plane: 1.740 Angstrom); Crystallographic D spacing ((1120) - a plane: 2.379 Angstrom); Crystallographic D spacing ((1123) - n plane: 1.147 Angstrom); gamma phase; molecular sieve; single side polished; weakly acidic
• Impurities: ≤0.005% heavy metals (as Pb); ≤0.2% alkalis (as Na2O)
• Cation Traces: Ca: ≤500 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤100 mg/kg; Fe: ≤300 mg/kg; K: ≤100 mg/kg; Na: ≤1000 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• Antion Traces: chloride (Cl-): ≤50 mg/kg; silicate (as SiO2): ≤1000 mg/kg; sulfate (SO42-): ≤1000 mg/kg; sulfate (SO42-): ≤500 mg/kg
• Contains: CaSO4 as binder
• Surface Area: >40 m2/g (BET); 155 m2/g; 70 m2/g; 85-115 m2/g (BET)
• Loss on Drying: ≤0.3% loss on ignition; ≤0.5% loss on ignition, 1000 °C, 2 h
• Type: for removing tert-butylcatechol; Type A-5; Type WA-4: Acid; Type WA-7: Acid; Type WB-5: Basic; Type WN-3: Neutral; Type WN-6, Neutral
• Quality: activated, neutral; for the determination of hydrocarbons; neutral
• Hardness: 9 mohs
• Avg. Particle Size: ≤10 μm
• Size: 10 mm × 10 mm × 0.5 mm
• diam. × L: 2-6 nm × 200-400 nm
• primary particle size: 13 nm (TEM)
• Linear Formula: Al2O3
• Empirical Formula (Hill Notation): Al2O3

DETAILS

MP Biomedicals - 0202152

Specific Surface Area: 200 m^2/g
Particle Size: 10-18 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204514

Mean Pore Size: 60Å
Particle Size: 50-200 μm
Bulk Density: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202075

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0202056

Specific Surface Area: 200 m^2/g
Particle Size: 18-32 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202061

Specific Surface Area: 200 m^2/g
Particle Size: 32-63 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204655

Neutral H15152

MP Biomedicals - 0204583

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202059

Specific Surface Area: 200 m^2/g
Particle Size: 18-32 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204340

Specific Surface Area: 200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: 9.0

MP Biomedicals - 0202020

Specific Surface Area: 200 m^2/g
Particle Size: 32-63 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202063

Specific Surface Area: 200 m^2/g Particle Size: 18-32 μm Weight: 0.8 g/ml pH: 4.5

MP Biomedicals - 0204568

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0204346

Specific Surface Area: 200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: 4.5

MP Biomedicals - 0202084

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204409

Contains 11% Gypsum
Specific Surface Area: 200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: 7.5

MP Biomedicals - 0202025

Basic Technical A

MP Biomedicals - 0204574

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0204511

Mean Pore Size: 60Å
Particle Size: 50-200 μm
Bulk Density: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202142

Specific Surface Area: 200 m^2/g
Particle Size: 3-6 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204601

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0202078

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0202148

Specific Surface Area: 200 m^2/g
Particle Size: 7-12 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202151

Specific Surface Area: 200 m^2/g
Particle Size: 10-18 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202143

Specific Surface Area: 200 m^2/g
Particle Size: 3-6 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202040

Specific Surface Area: 200 m^2/g Particle Size: 32-63 μm Weight: 0.8 g/ml pH: 10.0

MP Biomedicals - 0204595

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0204571

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 02100255

Tested and standardized for absorptive capacity 10-20% solids priced according to gross gel weight; Prepared per Methods of Enzymology, Vol. 1, page 97.

MP Biomedicals - 0204654

Neutral H15152

MP Biomedicals - 0204347

Specific Surface Area:200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: 4.5

MP Biomedicals - 0202099

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0204691

Particle Size: 63-200 μm
Weight: 0.18 g/ml
pH: 10.0

MP Biomedicals - 0202041

Specific Surface Area: 200 m^2/g
Particle Size: 32-63 μm
Weight: 0.8 g/ml
pH: 10.0

MP Biomedicals - 0202090

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204580

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202087

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202069

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0204589

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202105

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0202018

Technical H31101

MP Biomedicals - 0202072

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0204512

Mean Pore Size: 60Å
Particle Size: 50-200 μm
Bulk Density: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202102

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0204344

Specific Surface Area: 200 m^2/g Particle Size: 5-25 μm Weight: 0.7 g/ml pH: 7.5

MP Biomedicals - 0204598

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0202029

1-3 mm

MP Biomedicals - 0204592

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0202027

Basic Technical A

MP Biomedicals - 0202062

Specific Surface Area: 200 m^2/g Particle Size: 32-63 μm Weight: 0.8 g/ml pH: 7.5

MP Biomedicals - 0202135

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204341

Specific Surface Area:200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: > 9.0

MP Biomedicals - 0204586

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0202057

Specific Surface Area: 200 m^2/g
Particle Size: 18-32 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204413

Contains 11% Gypsum
Specific Surface Area: 200 m^2/g
Particle Size: 5-25 μm
Weight: 0.7 g/ml
pH: 7.5

MP Biomedicals - 0202159

Specific Surface Area: 150 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 4.5

MP Biomedicals - 0204569

Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10.0

MP Biomedicals - 0202065

Specific Surface Area: 200 m^2/g
Particle Size: 18-32 μm
Weight: 0.8 g/ml
pH: 10.0

MP Biomedicals - 0202026

Specific Surface Area: 200 m^2/g Particle Size: 32-63 μm Weight: 0.8 g/ml pH: 7.5

MP Biomedicals - 0202058

Specific Surface Area: 200 m^2/g
Particle Size: 18-32 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204577

Specific Surface Area: 200 m^2/g
Particle Size: 63-200 μm
Weight: 0.8 g/ml
pH: 10

MP Biomedicals - 0202149

Specific Surface Area: 200 m^2/g
Particle Size: 7-12 μm
Weight: 0.8 g/ml
pH: 7.5

MP Biomedicals - 0204692

Particle Size: 63-200 μm
Weight: 0.18 g/ml
pH: 10.0

Sigma Aldrich - 306312

Frequently Asked Questions
Live Chat and Frequently Asked Questions are available for this Product.
General description
Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:HQ/MEHQ: 3L at 100ppmTBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.Easy-to-use:1. Prewashing of prepacked glass columns with a small amount of monomer is recommended.2. Add monomer (or solvent) to an addition funnel which is secured above column.3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.4. For low-melting solid monomers, keep temperature of column above the melting point during use.Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.
Packaging
1, 12 ea in glass tube

Sigma Aldrich - 702129

Packaging
100, 500 g in glass bottle

Sigma Aldrich - 202606

Packaging
5, 20, 100 g in poly bottle

Sigma Aldrich - 517747

Packaging
5 g in glass bottle

Sigma Aldrich - 634875

Packaging
1, 5 ea in rigid mailer
Physical form
Crystalline, hexagonal (a = 4.758 Å, c = 12.992)
Features and Benefits
Common substrate for III-V nitrides as well as many other epitaxial films.
Physical properties
thermal expansion = 7.5 × 10-6 /°C; specific heat = 0.10 cal/°C; thermal conductivity = 46.06 @ 0 °C, 25.12 @ 100 °C, 12.56 @ 400 °C (W/m,K); dielectric constant = ~9.4 @ 300 K at A axis, ~11.58 @ C axis; loss tangent at 10 GHz < 2 × 10-5 at A axis, 5 × 10-6 at C axis

Sigma Aldrich - 544833

Packaging
10, 50 g in glass bottle

Sigma Aldrich - 642991

Other Notes
No dispersant
Packaging
100 mL in glass bottle

Sigma Aldrich - A8753

Other Notes
反应活性 I

Sigma Aldrich - 229423

Frequently Asked Questions
Live Chat and Frequently Asked Questions are available for this Product.
Packaging
25, 100 g in poly bottle

Sigma Aldrich - 311340

General description
Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:HQ/MEHQ: 3L at 100ppmTBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.Easy-to-use:1. Prewashing of prepacked glass columns with a small amount of monomer is recommended.2. Add monomer (or solvent) to an addition funnel which is secured above column.3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.4. For low-melting solid monomers, keep temperature of column above the melting point during use.Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.
Packaging
250, 500 g in poly bottle

Sigma Aldrich - 199443

General description
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
Packaging
1 kg in poly bottle
5 g in glass bottle
100 g in poly bottle
5, 20 kg in poly drum

Sigma Aldrich - 342696

Packaging
100 g in poly bottle

Sigma Aldrich - 311332

General description
Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:HQ/MEHQ: 3L at 100ppmTBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.Easy-to-use:1. Prewashing of prepacked glass columns with a small amount of monomer is recommended.2. Add monomer (or solvent) to an addition funnel which is secured above column.3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.4. For low-melting solid monomers, keep temperature of column above the melting point during use.Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.
Packaging
250, 500 g in poly bottle

Sigma Aldrich - 234745

Packaging
2.5 kg in poly bottle
500 g in poly bottle

Sigma Aldrich - 199974

Packaging
1 kg in poly bottle
5 g in glass bottle
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
100 g in poly bottle
5 kg in poly drum

Sigma Aldrich - A1772

Other Notes
反应活性超 I 级

Sigma Aldrich - 199966

General description
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
Packaging
1 kg in poly bottle
100 g in poly bottle
5 kg in poly drum

Sigma Aldrich - 342661

Packaging
1 kg in poly bottle

Sigma Aldrich - 342688

包装
1 kg in poly bottle
100 g in poly bottle

Sigma Aldrich - 643092

Other Notes
No dispersant

Sigma Aldrich - 718475

Packaging
100 g in poly bottle
Legal Information
Aeroxide is a registered trademark of Evonik Degussa GmbH

Sigma Aldrich - A1522

包装
1 kg in poly bottle
100, 500 g in poly bottle

Sigma Aldrich - A1647

Other Notes
反应活性超 I 级
包装
250 g in poly bottle

Sigma Aldrich - 309117

Physical form
Desiccant form

Sigma Aldrich - 342718

Packaging
100 g in poly bottle

Sigma Aldrich - 06290

General description
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.

Sigma Aldrich - 06300

General description
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.

Sigma Aldrich - 551643

General description
Aspect ratio estimated to be >100 based on TEM.
Packaging
10, 50 g in poly bottle

Sigma Aldrich - A9003

Other Notes
反应活性 I

Sigma Aldrich - 414069

Packaging
1 kg in poly bottle
250 g in poly bottle

Sigma Aldrich - 342726

Packaging
100 g in poly bottle

Sigma Aldrich - 517755

Packaging
5 g in glass bottle

Sigma Aldrich - 342653

Packaging
1 kg in poly bottle
100 g in poly bottle

Sigma Aldrich - 06320

General description
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
Other Notes
Carrier for Aluminum oxide supported reagents for highly selective organic reactions1,2

Sigma Aldrich - 306320

Application
Ready-to-use, prepacked, disposable columns for removal of the commonly used inhibitor 4-tert-butylcatechol.
General description
Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:HQ/MEHQ: 3L at 100ppmTBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.Easy-to-use:1. Prewashing of prepacked glass columns with a small amount of monomer is recommended.2. Add monomer (or solvent) to an addition funnel which is secured above column.3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.4. For low-melting solid monomers, keep temperature of column above the melting point during use.Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.
Packaging
1, 12 ea in glass tube

Sigma Aldrich - A2039

Application
适用于通过研磨或混合分裂酵母细胞和其他微生物。

Sigma Aldrich - 267740

Packaging
1 kg in poly bottle
Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
250 g in poly bottle
5 kg in poly drum

Sigma Aldrich - 342742

Application
Suitable for vacuum deposition.

Sigma Aldrich - 265497

Packaging
2.5 kg in poly bottle
25, 500 g in poly bottle
Application
Suitable for ceramic and refractory applications.

Sigma Aldrich - 342750

Packaging
50, 250 g in poly bottle
Application
Suitable for vacuum deposition.