Product Databook☐ Aluminum Hydroxide☐ Aluminum Oxide - Alumina☐ High Purity Alumina - HPA☐ Activated Alumina / Hydraulic Alumina

Table of Contents
1.

2.

3.

4.

Aluminum Hydroxide➢ Generic Grade

Page 2➢ Fine, Very Fine, Low-Soda

Page 2➢ High-Whiteness

Page 3➢ High-Whiteness (Surface Treated)

Page 3➢ Low Viscosity

Page 4

Aluminum Oxide - Alumina➢ Normal Soda / Unground

Page 5➢ Normal Soda / Ground

Page 6➢ Low Soda / Unground

Page 6➢ Low Soda / Ground

Page 7➢ Low Soda / Ground (for Functional Fillers)Page 8➢ Normal Soda / Easy-sintering (Reactive)

Page 9➢ Low Soda / Easy-sintering (Reactive)

Page 10High Purity Alumina - HPA➢ AKP Series

Page 11➢ Advanced Alumina (AA)Page 12➢ NXA Series

Page 13➢ Gamma HPA/HIT Series/High Bulk Density for Single Crystal

Page 14

Activated Alumina / Hydraulic Alumina➢ Activated Alumina : Powder ShapePage 15➢ Activated Alumina : Spherical ShapePage 16➢ Hydraulic Alumina

Page 17<Important Notice for Users of this Databook>(1) All data in this data book is typical and not guaranteed. The typical properties of all the listed products in this databook are subject to change without prior notice due to continual improvements.
(2)

Applications mentioned in this databook are examples without any guarantee. Fitness for any particular purpose
should be verified by customers.

(3)

Please refrain from using products in this databook for medical and food applications.

Page 1 of 17

1. Aluminum Hydroxide
Sumitomo Aluminum Hydroxides product portfolio is quite wide to serve diverse industries. Our precipitation
process in Bayer Process enables us to fine-tune particle sizes and impurity levels to serve various industries.

Generic GradeC-12 : Extremely low impurity concentration and small
particle size. Excellent reactivity.

*Analysis after dried.
Calculated as oxide after analyzing Fe, Si, Na contents.
Al(OH)3 = 100 – (Fe2O3+SiO2+Na2O)

Fine, Very Fine, Low-Soda*Analysis after dried.
Calculated as oxide after analyzing Fe, Si, Na contents.
Al(OH)3 = 100 – (Fe2O3+SiO2+Na2O)

Page 2 of 17

High Whiteness*Analysis after dried.
Calculated as oxide after analyzing Fe, Si, Na contents.
Al(OH)3 = 100 – (Fe2O3+SiO2+Na2O)High Whiteness (Surface Treated)

Page 3 of 17

Impart tone and transparency to artificial
marbles / plastics when added as a filler.

Low Viscosity*Analysis after dried.
Calculated as oxide after analyzing Fe, Si, Na contents.
Al(OH)3 = 100 – (Fe2O3+SiO2+Na2O)
CW-310LV

Click the movie to learn viscosity performance difference between each product.
<Test Conditions>Observed the compound’s behavior 100 seconds while pressing with 50g weight.
Aluminum Hydroxide： 60vol%
Resin：
Silicone
Compound Volume：
1.5g
Weight：50g<Movie Operating Conditions>

PC only.
Download this PDF file necessary.

Page 4 of 17

2. Aluminum Oxide - Alumina
Sumitomo Chemical’s Calcined Aluminas are produced in various levels of calcination level/soda content andsupplied in both unground and ground shapes to satisfy diverse customer requirements.

Normal Soda / UngroundA-21 : High calcined. Used for initial buffing stages of stainless steel.
A-26 : Smaller α crystal size with lower calcination than A-21. Used as a reactive alumina when ground.
A-210 : High calcined. Low dust and good fluidity.

A-21

AM-21Page 5 of 17

20μm

10μm

A-26

20μm

AM-210A-210

10μm20μm

Normal Soda / Ground* Flux 4%, 49MPa(500kg/cm2), sample sintered at 1600 degC.
AM-21 / AM-210 : Ground high calcined alumina. Used for intermediate buffing stages of stainless steel.
AM-210-02 : A variation of AM-210 with bigger particle size and bi-modal particle size distribution. Used for both initial and intermediate buffing stages of stainless steel.
AM-27 : Finely ground for mirror surface buffing stages of stainless steel.
AM-28B : Specially developed for intermediate buffing stages of stainless steel. Some of coarse particles crumble to fine particles.

Low Soda / UngroundMolding density and firing shrinkage vary between these products due to α crystal size differences.

Page 6 of 17

Low Soda / Ground*Flux 4%, 49MPa (500kg/cm2), sample sintered at 1600 degC.
ALM-41-01 / ALM-43 : Ground down close to α crystal sizes.
AL-41DBM-01 : PSD of ALM-41-01 shifted to smaller side. Used for LTCC and thermal conductive fillers.

ALM-41-01

5μmAL-41DBM-01

Page 7 of 17

5μm

Low Soda / Ground (for Functional Fillers)

AL-M73A : Top-cut version of ALM-43.
AL-S43B : PSD of ALM-43 narrowed.
AL-32B : Big α crystal size, and easy to mix with resins.

AL-M73A

AL-32B

5μm

AL-S43B

5μm

10μm

Page 8 of 17

Normal Soda / Easy Sintering (Reactive)* No flux added, 29.4MPa (300kg/cm2), sample sintered at 1600 deg C.
AMS-5020F : Enables high filling ratio because of bi-modal and broad particle size distribution.
Typically used for castable plasticizer and low shrinkage ceramics.
AMS-90B : Mono-modal particle size distribution, ground down to 0.7μm.

AMS-90B

Page 9 of 175μm

Low Soda / Easy Sintering (Reactive)* MgO is an additive and not considered as an impurity in Al2O3.
**No flux added, 29.4MPa (300kg/cm2), sample sintered at 1600 deg C.
AES-11/11C : Sub-micron size particles. Used for fine ceramic applications requiring 99% purity or higher.
AES-11H : Contains less re-agglomeration than AES-11 / 11C, and it makes slurry dispersion easier.
AES-12 : MgO not added. Also used as a sub-filler of thermal interface materials.
AES-23 : Thixotropic and low viscosity.

AES-12

AES-115μm5μm

Page 10 of 17

3. High Purity Alumina - HPA
Sumitomo Chemical’s High Purity Aluminas(HPA) are uniform fine powders characterized by highly pure and homogeneous crystal structure. We produce HPA by Aluminum Alkoxide Hydrolysis process.

AKP Series

Sintering Properties

Page 11 of 17

Advanced Aluminas are α-alumina single crystals with precisely controlled particle size distribution and almostspherical polyhedral shape.

Advanced Alumina (AA)Page 12 of 17

NXA is almost-spherical fine α-alumina crystals with excellent dispersion.

NXA SeriesParticle Size Distribution

Sintering Properties

Page 13 of 17

Gamma HPA

AKP-G15

AKP-G07

HIT Series

HIT-60A

HIT-100

High Bulk Density for Single Crystal

AKX-5

Page 14 of 17

4. Activated Alumina / Hydraulic Alumina
Activated Alumina : Powder Shape

Activated Alumina can be used as an adsorption refining
agent, especially to refine non-polar solvents.
In general, the more polarity and heavier molecularweight, the better adsorption effect would be obtained.
Adsorption order example as follows.
-SO3H > -COOH > -OH, -NH2, -SH > -CHO
> -CO > -COOR > -S-, -O- > -X
> Unsaturated hydrocarbons> Saturated hydrocarbons
Adsorption performance can be measured in terms ofadsorption rate and transmission rate of the picric acidby sending a benzene solution of picric acid through acolumn filled with activated alumina.

Page 15 of 17

Activated Alumina : Spherical ShapePage 16 of 17

KHD-46

KHD-24

Hydraulic Alumina
An alumina powder with a large surface areaand some crystal water.
Used as a binder for refractories instead ofalumina cement due to large caking capacityand plasticity.

Condition/setting time of the hydraulic alumina and water mixture* Setting time is determined by JIS R 5210 needle penetration method (slurry thickness 38mm).
Distance between the slurry bottom and the needle is 25mm.

Page 17 of 17

Plant & Office Location / Contact

Aluminum Hydroxide as a flame retardant for CCL.

Aluminum Hydroxide as a filler for solid surface.

CONTACTS for Sales and Technical Information◆ Aluminum Hydroxide / Alumina / High Purity Alumina-HPA
Alumina Products Dept. / High Purity Alumina Dept.
2-7-1, Nihonbashi, Chuo-ku, Tokyo, 103-6020, JapanTEL+81 3 5201 0259 FAX+81 3 5201 0460

◆ Activated Alumina / Hydraulic Alumina
Sumika Alchem Co., Ltd.

1-8, Nihonbashi Koamicho, Chuo-ku, Tokyo, 103-0016, JapanTEL+81 3 6837 9340 FAX+81 3 6837 9341

JUL2023ENG_Ed.2