USE: 25% solution in water.

APPLICATION: Blackfast 181 will chemically black cast iron and steels containing 12% chromium or less at room temperature (20’C). Blacking performance may be adversely affected by temperatures lower than 16 C. Preparation of the surface of the item to be blacked is carried out using one or more steps involving degreasing, pickling and conditioning using the appropriate Blackfast products with intermediate flowing water rinses. Once the surface is chemically clean and, if necessary, conditioned, the item is immersed in the Blackfast solution for 1 minute. Components are normally jigged or barrelled with agitation if necessary to ensure all parts of the metal surface are in contact with the liquid. Following blacking, the item is rinsed in a flowing water bath and finally dipped in a dewatering oil such as Blackfast 825, 833 or 841 depending on the type of finish required. Thus a typical blacking line can involve 7 tanks (degreasing – rinse - conditioning - rinse - blacking - rinse - oiling).

TANK CONTROL: Tanks should be of plastic, rubber lined steel or stainless steel. When in regular use, the performance of Blackfast 181 can be monitored readily by the appearance of the blacked components and the time taken to achieve the correct result. In addition a simple test can be undertaken to check the strength of the tank solution. 10 ml of tank solution is placed in a transparent conical flask and a few drops of bromocresol green indicator added. The contents of the flask are titrated with a test solution (N/25 NaOH) until the original green colour has changed to blue. Consumption of 20 ml of the test solution indicates a tank of the correct strength. For each one ml shortfall from the reading of 20 ml, it is necessary to add 1.25% Blackfast 181 (i.e. for a 100 litre bath add 1.25 litres 181).

Blackfast 181 blacking solution is part of the Blackfast range of products for the chemical blacking of iron and steel at room temperature.

Blackfast Chemicals continues to improve the quality and performance of its range of products and reserves the right to modify product formulations without prior notice.

SAFETY DATA:

1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY

PRODUCT NAME: BLACKFAST 181 BLACKING SOLUTION
APPLICATION: Blacking of iron and steel at room temperature
COMPANY: Blackfast Chemicals
ADDRESS: 78 Coombe Road, New Malden, Surrey KT3 4QS, England
TEL/FAX NO’S: Tel: 0181-336 2900 Fax: 0181-336 0909

2. COMPOSITION/INFORMATION ON INGREDIENTS

COMPOSITION: Aqueous solution of inorganic/organic salts.
HAZARDOUS INGREDIENTS: Selenium Compound <1% as Se
Copper Compound <1% Cu
Nickel Compound <1% Ni
SYMBOL: Xn
RISK PHRASES: R 20/22, R 33, R 36/38
EEC NO: 36/38 231 -957-4

3. HAZARDS IDENTIFICATION

Harmful

4. FIRST AlD MEASURES

INHALATION: Remove to fresh air. Seek medical aid
INGESTION: Gargle, rinse mouth and drink plenty of water. Do not induce vomiting. Seek medical aid
SKIN: Remove contaminated clothing and wash skin with plenty of water. Seek medical aid.
EYES: Flush with clean water immediately for 10 minutes. Seek medical aid.

5. FIRE FIGHTING MEASURES

Non flammable. Will not support combustion.
Decomposition products: Oxides of Carbon, Phosphorus, Selenium, Chlorine and Chlorine Oxides.

6. ACCIDENTAL RELEASE MEASURES

PERSONAL PRECAUTIONS: When dealing with a spill note the recommendations in Section 7.
ENVIRONMENTAL: Prevent entry into drains, sewers and water courses
SPILLAGE: Absorb liquid in absorbent clay granules.

7. HANDLING AND STORAGE

Aviod inhaling the vapour. Avoid contact with skin and eyes. Store in clean, dry conditions. Keep container closed and ensure label intact and legible. Prevent from freezing.

8. EXPOSURE CONTROLSlPERSONAL PROTECTION

Maximum Exposure Limits: Nickel Compound 8 hr TWA 0.1 mgm-3 (EH 40/94)
Occupational Exposure Limits: Selenium Compound (as Se) 8 hr TWA 0.1 mgm-3 (EH 40/94). Cover when not in use. Local exhaust ventilation is recommended when in continuous use. Personal protection: Wear impervious (PVC) gloves, eye protection and plastic apron. Remove contaminated clothing immediately.

9. PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE: Blue liquid
SPECIFIC GRAVITY: 1.18 @ 200C
SOLUBILITY/MISCIBILiTY IN WATER: Complete
FLASH POINT:N/A
DEGRADATI ON: Can occur above 500C
pH: 3.5 - 4.0

10. STABILITY AND REACTIVITY

Solution is stable under normal conditions. Avoid temperatures above 400C and below 50C. Irritant gases may be released above 500C. Avoid sources of ignition.

11.TOXICOLOGICAL I NFORMATION

The folIowing toxicological information is based on the toxicity of the products principal hazardous component - Selenium Compound. Local contact may cause irritation of the skin and mucous membranes. Inhalation may cause coughing. Ingestion may cause vomiting and diarrhoea.

12.ECOLOGICAL INFORMATION

Not assessed.

13.DISPOSAL INFORMATION

Disposal must be in accordance with local and national legislation. Dispose through an authorised waste contractor to a licensed site.

14. TRANSPORT INFORMATION

No special precautions are necessary.

15. REGULATORY INFORMATION

HAZARDOUS INGREDIENTS: Selenium, Copper and Nickel Compounds
SYMBOL: Xn
RISK PHRASES: Harmful by inhalation and if swallowed. Danger of cumulative effects. Irritating to eyes and skin.
SAFETY PHRASES: When using, do not eat, drink or smoke. After contact with skin, wash immediately with plenty of water. In case of accident or if you feel unwell, seek medical advice (show the label where possible).
STATUTORY INSTRUMENTS: Health and Safety at Work Act 1974. Chemicals (Hazard Information and Packaging) Regs 1993 (Si 1746). Control of Substances Hazardous to Health Regs 1988 (Si 1657). Environmental Protection Act 1990.
CODES OF PRACTICE: Classification and labelling substances dangerous for supply (COP 22). Waste management: The duty of care.
GUIDANCE NOTES: Occupational exposure limits (EH 40). Classification, Packaging and Labelling of Dangerous Substances Regs. 1984 HS(R)22.

16. OTHER INFORMATION

Read the Application Data Sheet before using this or any Blackfast product. The product is intended for the stated use only. Do not use the product for any other application without obtaining advice from us beforehand.
If this product is for resale, ensure that the purchaser receives a copy of this information.
If this product is for end use, ensure that your employees and others who may be affected are aware of the contents of this sheet.