Absorbents

ACTIVATED CARBON (RB3) SPEC.

Typical Characteristics

  UNITS RB3 CARBON
Physical parameters    
Pellet size mm Ø
mm l
3 ± 0.3
6 - 7
Bulk density g/l 480 - 510
Ash content % 4 - 12
Moisture, as packed % 5 max.
ASTM ball pen hardness % 90 min
     
Adsorption properties    
lodine number mg/g 950 - 1050
C.T.C. number % 62 min
Benzene adsorption capacity % 35 min

MOLECULAR SIEVES

Absorbent for Drying and Purification of Gases and Liquids.

1. PRODUCT DESCRIPTION

Molecular Sieve MS 512 is a highly porous, crystalline alumino silicate in beaded form. The pore openings in the crystals have a diameter of approximately 4 mm.

2. RECOMMENDED APPLICATIONS.

Molecular Sieves MS 512 is a product for dynamic drying of most gases and vapors. It can also be used to remove other impurities with effective molecular diameters smaller than 4 mm. Typical applications for Molecular Sieves MS 512 are drying / purification of natural gases, reformer gas and air.

3. Property Unit Specification Test Method
Total Volatile (950ºC) % 3.0 max 107
H2O Adsorbtion Capacity % 17.5 min 102
Crush Strength N 40 min 104
Screen Analysis     101
 6.3 mm % 0  
 5.0 mm % 7.0 max  
 2.5 mm % 95.0 min  
 1.6 mm % 99.0 min  
4. 10 % ph 25ºC

TEGNON SILICA GEL

Pure silica, when prepared under accurately controlled conditions, can exist in a highly porous state. In this condition it is known as ‘silica gel’ and because of its sponge-like structure and very large surface area it has great powers of adsorption.

The adsorptive action of silica gel is purely physical for the material is chemically inert. There is no change in the size or shape of the particles as the gel becomes saturated and no corrosive or injurious compounds are formed.

Silica gel has the following properties:

  • High adsorptive capacity
  • Chemical inertness
  • Good physical strength and abrasion resistance
  • Long desiccant life
  • Economical reactivation

Because of its many useful features silica gel has a multitude of uses, which may be grouped under three headings – static adsorption, dynamic adsorption, and miscellaneous uses.

STATIC ADSORPTION

Static adsorption is the use of silica gel for the removal of moisture and control of humidity under conditions where there is no airflow.

The most common use of silica gel for this purpose is its use in packaging. All packing materials to a greater or lesser extent permit the passage of moisture vapour hence the use of silica gel to remove this and prevent damage. Only a hermetically sealed pack is completely moisture vapour proof and does not require protection from external moisture.

Interesting uses for static adsorption are:

1) The prevention of corrosion or mould growth in show cases and instrument cases
2) Maintaining a dry atmosphere in tins or other airtight containers used for carrying or storing foodstuffs or pharmaceutical products
3) Removing moisture from transformer breathers or preventing moisture entering empty store tanks
4) The protection of personal belongings such as cameras, binoculars etc. in humid climates
5) The removal of moisture from refrigerant circuits

DYNAMIC ADSORPTION

Dynamic adsorption is effected by passing a stream of air or gas, saturated or partly saturated with vapour through a bed of Silica Gel contained in a suitable vessel. Owing to its large internal surface area Silica Gel has the property of adsorbing substantial quantities of vapour from gases even at very low pressures and it is, therefore, suitable for drying air and for the adsorption and recovery of organic vapours.

Some typical dynamic drying applications:

1) The removal of moisture vapour from gases such as hydrogen, nitrogen and carbon dioxide before compressing into cylinders
2) The drying of air used in air conditioners
3) Gas drying where the presence of moisture may lead to the corrosion of plant e.g. coal gas, carbon dioxide for refrigerant and natural gas
4) The liquid phase drying of certain organic liquids

HANDLING

Must be kept in the airtight containers in which it is supplied until required for use. Tin and drum lids must be replaced immediately after use.

REACTIVATION

Both ordinary and indicator types, can be reactivated by heating for a period of about 2 hours at a temperature not exceeding 250ºC. Bagged material should be heated for a period of about 3 hours at a temperature of 100ºC.

TYPICAL PHYSICAL AND CHEMICAL DATA

Bulk density :

700 kg/m³
Surface area : 850m³/g
 

Water vapour adsorption

20% Relative humidity

12%
50% Relative humidity 26/30%
 
Iron content : 0.35%
Plus 6.3mm sieve: 1.0%
Minus 2.5mm sieve: 2.0%
Dust approximate: 0.2%

GRADES OF SILICA GEL

Silica gel is available in two grades

  • Clear gel
  • Indicator gel

The indicator gel changes colour when saturated with water.


 
G300 SPHERICAL ACTIVATED ALUMINA
PRODUCT INFORMATION
G300 is a smooth sphere of activated alumina. G300 is an excellent desiccant for drying a
wide variety of liquids and gasses. Although all molecules are adsorbed to some extent on G300,
those molecules having the highest polarity are preferentially adsorbed. Extreme conditions such
pressure; concentration and molecular weight of the molecules, temperature, and site competing
molecules affect the efficiency of adsorption.
PRODUCT APPLICATION
Activated alumina is a porous, high surface area form of alumina oxide, which adsorbs contaminants
from liquids and gases without any change in form.
G300 activated aluminas will not soften or disintegrated when immersed in liquids in the absence
of irreversible fouling, and may be regenerated to its original adsorption efficiency by purging with
hot gas at a temperature between 177-316ºC. For the most efficient cyclic adsorption performance,
high temperature, low pressure, and dry inert gas regeneration is recommended.

TYPICAL CHEMICAL PROPERTIES

  Wt%
Al 2Oз 93.10
SiO2 0.02
Fe 2Oз 0.02
Na 2O 0.30
Lol (250-1100°C) 6.50

TYPICAL PHYSICAL PROPERTIES

Size 4 –8 mm
Surface area 340 m²/ gram
Total pore volume 0.5 cc/gram
Packed bulk density 769 kg/m³
Crush strength 25 kg’s
Abrasion loss 0.1 wt%
HEALTH AND SAFETY INFORMATION ON ALUMINA G300
G300 Alumina is made from activated aluminium oxide (Al 2Oз). See data for typical analysis. In active conditions it will release heat when absorbing water or other substances, if a large quantity of alumina quickly absorbs water the alumina can become hot enough to cause thermal burns to the skin. Contact has to be avoided under these conditions. Information to date indicates that alumina is not toxic and does not cause fibrosis. Nerveless the user is responsible to controlling the working environment according to local occupational regulations.

1) TYPICAL PHYSICAL PROPERTIES

Size 4 –8 mm
Surface area 340 m²/ gram
Total pore volume 0.5 cc/gram
Packed bulk density 769 kg/m³
Crush strength 25 kg’s
Abrasion loss 0.1 wt%

2) COMPOSITION / INFORMATION ON INGREDIENTS

>> SUBSTANCE  
Common chemical name Alumina
Further data Hydrated, 3 H2O
CAS number  
Ingredients contributing to the hazard  

3) HAZARDS IDENTIFICATION

>>MOST IMPORTANT HAZARDS  
Adverse human health effects Slightly irritation to eyes and respiratory system
Physical and chemical hazards  
  • Fire or explosion
No particular fire or explosion hazard.
Classification / Specific hazards According to EEC criteria, this product is not classified as a
“hazardous substance”
Further information If spilled, may cause the floor to be very slippery

4) FIRST-AID MEASURES

Inhalation Move to the fresh air / If necessary seek medical advice
Skin contact Rinse with water
Eye contact IMMEDIATELY rinse with plenty of water for a prolonged
period, (at least 15 minutes) whilst keeping the eyes wide
open. If irritation persists, consult an eye specialist.
Ingestion Rinse mouth out with water / Consult a doctor if necessary

5) FIRE-FIGHTING MEASURES

Extinguishing media  
  • Suitable
All extinguishing agents can be used
  • Not suitable
None to our knowledge. If there is a fire close by, use
suitable extinguishing agents.
Specific hazards Refractory material. Does not present any particular risk
in the event of a fire

6) ACCIDENTAL RELEASE MEASURES

Personal precautions Avoid contact with eyes / Do not breath dust
Environmental precautions This product does not present any particular risk for the
Environment
Methods for cleaning up  
  • Recovery
Sweep up or vacuum up the product
  • Cleaning / Decontamination
If necessary, wash with water following recovery
Further information Since the product is in the form of balls, it can cause the
floor to be very slippery.

7) HANDLING AND STORAGE

>>HANDLING  
Technical measures Does not require any specific or particular measures.
Measures Avoid the formation of dust.
Safe handling advice Comply with instructions for use (refer to a technical sheet)
   
>>STORAGE  
Technical measures Does not require any specific or particular technical measures
Storage conditions  
  • Recommended
To guarantee the quality and properties of the product keep
protected from humidity and bad weather conditions.
Incompatible products Acids
Packaging product may be packed in normal commercial packaging
Packaging materials  
  • Recommended
Steel / Plastic materials
  • Not suitable
Iron

8) EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering measures No specific measures are required provided the product is
handled in accordance with the general rules of occupational
hygiene and safety
   
>>CONTROL PARAMETERS  
Occupational exposure limits  
  • Limits (France)
Total dust – VME: 10 mg/m³
Alveolar dusts – VME: 3 mg/m³
  • Limits (U.S.A. / A.C.G.I.H.)
Total dust – TLV (TWA): 10 mg/m³
Respirable particles – TLV (TEA): 3 mg/m³
Personal protective equipment  
  • Respiratory protection
Respiratory protective device with a particle filter
  • Eye protection
Safety spectacles with side shields.

9) PHYSICAL AND CHEMICAL PROPERTIES

>>APPEARANCE  
  • Physical state
Solid
  • Form
Balls
  • Diameter
2mm / 5mm
  • Colour
White
  • Odour
None
  • pH
Not applicable (insoluble product)
   
>>SPECIFIC TEMPERATURES  
  • Melting
>2000°C
   
>>FLAMMABILITY CHARACTERISTICS  
  • Flash point
Not applicable (non-flammable solid)
Oxidizing properties Non oxidizing material according to EEC criteria
Apparent specific gravity 0.8 kg/dm3 (Tamped product)
   
>> SOLUBILITY  
  • In water
Practically insoluble
  • In organic solvents
Insoluble in common organic solvents

10) STABILITY AND REACTIVITY

>>STABILITY Refractory product, stable at high temperatures
   
>> HAZARDOUS REACTIONS  
  • Conditions to avoid
No dangerous reactions known under normal conditions of use
See technical data sheet
  • Material to avoid
Strong acids / Strong bases

11) TOXICOLOGICAL INFORMATION

>>ACUTE TOXICITY  
  • Local effects
Slightly irritation to the respiratory system
Slightly irritation to the eyes.

12) ECOLOGICAL INFORMATION

>>BEHAVIOUR IN THE ENVIRONMENT  
Mobility Slightly soluble product, readily forms deposits
Persistence / Degradability Inert mineral product / Not degradable
Bioaccumulation Very slightly boaccumulable
Destination of the product Ultimate destination of the product – SOIL and SEDIMENT

13) DISPOSAL CONSIDERATIONS

>>WASTE FROM RESIDUES  
Destruction / Disposal May be disposed of with non hazardous industrial waste
   
>>CONTAMINATED PACKAGING  
Decontamination / cleaning Completely empty the packaging prior to recycling
Destruction / Disposal Reuse or recycle following washing
   
>>FURTHER INFORMATION The exhausted catalysts may have different risks and
properties compared to the original product. This safety
data sheet is not applicable to exhausted catalysts
   
>>NOTE The user’s attention is drawn to the possible existence of
local regulations regarding disposal

14) TRANSPORT INFORMATION

>>INTERNATIONAL REGULATIONS  
LAND  
  • Rail / Road (RID/ADR)
Not restricted
SEA (IMO/IMDG) Not restricted
AIR (ICAO/IATA) Not restricted
   
>>OTHER REGULATIONS  
France: Rail/road (RID/ADR) Not restricted
   
>>NOTE The above regulatory prescriptions are those valid on the
date of publication of this sheet. Given the possible
evolution of transport regulations for hazardous materials,
it would be advisable to check their validity with your
sales office

15) REGULATORY INFORMATION

>>LABELLING  
EEC Regulations Mandatory labelling (self-classification) of hazardous
substances: not applicable.
   
>>NOTE The regulatory information given above only indicates the
principal regulations specifically applicable to the product
described in the Safety Data Sheet. The user’s attention is
drawn to the possible existence of additional provisions,
which complete these regulations. Refer to all applicable
national, international and local regulations or provisions

16) OTHER INFORMATION

>>USERS  
  • Recommended users
(For further information, refer to the product technical
data sheet) Adsorbent for gas and liquid treatment
Chemical formula A1203
 
This safety data sheet should be used in conjunction with technical sheets. It does not replace them. The information given is based on our
knowledge of this product, at the time of publication. It is given in good faith. The attention of the user is drawn to the possible risks incurred by
using the product for any other purpose other than that for which it was intended. This does not in any way excuse the user from knowing and
applying all the regulations governing his activity. It is the sole responsibility of the user to take a; precautions required in handling the product.
The aim of the mandatory regulations mentioned is to help the user to fulfil his obligations regarding the use of hazardous product. This
information is not exhaustive. This does not exonerate the user from ensuring that legal obligations other than those mentioned, relating to the use
and storage of the product, do not exist. This is solely his responsibility.