Southern Clay Products
Rockwood Additives Limited
Safety Data Sheet
Section 1 - Identification of the Substance and of the Company:
Product Name: Chemical Name:
LAPONITE D, RD, ED, HB Hydrous Sodium Lithium
Magnesium Silicate
Company Identification:
Contact: Contact:
Rockwood Additives Limited
PO Box 2, Moorfield Road Southern Clay Products, Inc.
Widnes. U.K. 1212 Church Street
WA8 0JU. Gonzales, TX 78629
Tel: +44 (0) 151 495 2222 Tel: 1-800-324-2891
Section 2 - Chemical Composition:
Typical Composition: CAS: 53320-86-8
SiO2 59-60% EINECS 258-476-2
MgO 27-29%
Li2O 0.7-0.9 %
Na2O 2.2-2.9%
LOSS ON IGNITION 9.2-9.8%
All values are % w/w
Section 3 - Hazards Identification:
Eye Contact: Inhalation:
Skin Contact: Ingestion:
May cause gastric
May cause degreasing of irritation.
Irritation due to physical
skin, dryness or cracking contact with dust. Irritation to nose
and mouth
CHIP/RISK/SAFETY Classification:
Warning Symbols: None required
Risk Phrases: None required
Safety Phrases: S22 S51 Do not breathe dust and use only in well ventilated areas.
Section 4 - First Aid Measures:
Skin Contact: Eye Contact:
Irrigate thoroughly with cold water. Seek Irrigate thoroughly with cold water, keeping eyelids
medical attention if symptoms persist open to ensure effective washing. Seek medical
advice if irritation persists.
Inhalation: Ingestion:
Remove person to fresh air, loosen clothing Small amounts: wash mouth out with water and
and seek expert medical help give lots of water to drink. If large amounts
ingested medical advice should be sought.
Section 5 - Fire-Fighting Measures:
Use extinguisher to suit cause of fire. Wet Laponite may present a slip hazard.
Section 6 - Accidental Release Measures:
Wear protective clothing against nuisance dust. Sweep up or vacuum spilled product and dispose in
accordance with Local Authority Regulations.
Section 7 - Handling and Storage:
Handling:
Handle using approved gloves in well ventilated area. Handle product in such a way as to minimise
dust formation.
Storage:
Store under dry conditions since high humidity or direct contact with water will result in caking. Store
away from mineral acids and substances liable to decomposition by dust e.g peroxides. Seal
container after use.
Section 8 - Exposure Controls/Personal Protection:
Hand Protection: Skin Protection:
Use PVC or rubber gloves. Normal workwear supplemented by barrier
cream.
Eye Protection: Respiratory Protection:
Wear chemical goggles approved for nuisance dust: Use approved orinasal dust mask to
BS 2092
BS 6016 Type 2 if Occupational exposure
limits cannot be met by ventilation.
Occupational Exposure Limit:
This product is classed as a nuisance dust with an 8 hr TWA Occupational exposure standard, for
total Inhalable dust of 10 mg/m3 and 5 mg/m3 for respirable dust.
Section 9 - Physical and Chemical Properties:
Appearance: Odour: pH: 9.8
Free flowing white powder Odourless (2% dispersion in water)
Melting Point:
Boiling Point: Flash point:
Not applicable Not applicable
Fuses at 900掳C
Explosive
Flammability: Oxidising Properties:
Properties:
Non-flammable Inert
None
Relative Density:
Vapour Pressure: Solubility:
Not applicable Insoluble in water but forms a colloid gel
0.7-1.3 kg/dm3 on standing.
Packed
Section 10 - Stability and Reactivity:
Hazardous
Conditions to Avoid: Materials to Avoid:
Decomposition
Avoid excessive moisture Avoid contact with strong mineral acids or Products:
substances liable to decomposition by dust
e.g peroxide.
Lithium salts if product
decomposed by mineral
acid.
Section 11 - Toxicology Information:
Ingestion - low acute toxicity (LD50 - Oral rat > 8g/kg body weight)
Skin - Primary Irritation Index 0.5 (Rabbit)
Inhalation - LC 50 (rat) > 1.66 g/m3 (maximum supportable dust)
Eye Contact - No long term irritation effects.
Long Term Exposure - Long term exposure to dust in excess of the Occupational Exposure standard
may result in fibrosis of the lung tissue.
Section 12 - Ecological Information:
Laponite contains no heavy metals or other agents which are harmful to the environment. The
material itself is ecologically inert.
Section 13 - Disposal Considerations:
Waste product may be disposed of by landfill. National and Local legislation concerning disposal of
waste materials must be followed and any product disposed of using an approved waste disposal
contractor.
Section 14 - Transport Information:
There are no specific transportation precautions required. This product is not classed as a
dangerous substance under the classification, packaging and labelling of dangerous substances
regulations.
Section 15 - Regulatory Information
15.1 Dangerous Substances Directive 67/548/EEC and Dangerous Preparations Directive
88/379/EEC:
These do not apply.
15.2 Information on the label:
S22-51
15.3 Control of Substances Hazardous to Health (COSHH) Regulations 1988.
These regulations apply in the UK.
15.4 California Safe Drinking Water and Toxic Enforcement Act (Proposition 65)
These do not apply
Section 16 - Other Information:
Thixotropic gelling and suspending agent for aqueous systems; gel forming, general purpose grade.
Decomposed by strong mineral acids.
HSE Approved Codes of Practice EH40, EH12
Laponite is a wholly synthetic product and therefore does not contain any quartz or respirable
crystalline silica impurities.
ISSUE: 3, 15 January, 2001
DATE Distributed: 2 September, 2004
This Safety Data Sheet complies with the EEC Commission Directive of 5/3/91.
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