SARKOSYL O, an N-acyl sarcosine, is a corrosion inhibitor for lubricating oils, greases O R C N CH COOH CH 2 3

Transcription

1 Ciba Specialty Chemicals Additives Lubricant Additives Ciba SARKOSYL O Oil soluble corrosion inhibitor Typical chemical and physical properties SARKOSYL O, an N-acyl sarcosine, is a corrosion inhibitor for lubricating oils, greases and fuels O R C N CH COOH CH 2 3 Appearance Clear, yellow to brown liquid Viscosity at 40 C 350 mm 2 /s Density at 20 C 0.96 g/cm 3 Flash point > 130 C, COC Solubility Water < 0.01% Mineral oil > 5% Applications and Industrial lubricants % typical treat levels Greases % recommended Rust preventatives 0.5-1% Gasoline and diesel fuels ppm Benefits Effective corrosion inhibitor, especially in combination with Amine O Approved by FDA/USA for use in blending lubricants with incidental food contact Will not tarnish copper Contains no diluents Easy to handle liquid Date first Edition: April, 1996 Product Name: SARKOSYL O page 1 of 8

2 Additive volatility The volatility of additives can have a major impact on lubricant performance characteristics. Thermogravimetric analysis (TGA) provides information about the volatility of an additive, as well as its thermal and oxidative stability. Test procedure Additive < 50 mg, is heated in a controlled atmosphere (air) at a rate of 10 C per minute from 25 C up to as high as 400 C. The weight loss (in %) of the sample as a function of temperature is represented graphically. Weight loss (% w/w) Sarkosyl O Temperature (deg C) Lubricants with incidental food contact Ciba can offer a full range of additives cleared by FDA/USA for formulating lubricants which may come into contact with food. Please see Product Selection Guide for full list. Cleared by the FDA under 21 CFR , for use in USDA H-1 lubricants with incidental food contact. SARKOSYL O Maximum treat level (1) 0.5 % wt/wt (1) The maximum allowed concentration may exceed the solubility limit of this additive in some base stocks. Date first Edition: April, 1996 Product Name: SARKOSYL O page 2 of 8

3 Performance benefits: Metal surface protection Rust prevention SARKOSYL O is an effective corrosion inhibitor, at low concentrations, in turbine lubricating oils Test fluids SARKOSYL O (ppm) Base stock (1) neat balance balance (ASTM D 665) Procedure A: deionised water 60 C, 24 hrs Iron spindle (rating) Fail Pass Pass Procedure B: sea water Iron spindle (rating) Fail Fail Pass (1) Base stock characteristics Viscosity at 40 C (mm 2 /s) 26 VI 98 C (aromatic) (%) 6.5 Sulphur (%) 0.54 Greases Rust prevention The combination of SARKOSYL O and Amine O protects metals in stearate greases against corrosion in a synergistic manner. Test greases Corrosion inhibitors as indicated Li-12-OH stearate grease (NLGI Grade 2) balance Static rust test (ASTM D 1743) Roller bearings, prepacked with grease,stored at 100 % relative humidity and 25 C for 2 weeks Bearing rating (mean value of 3 tests) free of rust 1 2 3b 3d Amine O (%) 1.0 Sarkosyl O (%) 0 Date first Edition: April, 1996 Product Name: SARKOSYL O page 3 of 8

4 Greases Rust prevention Good ferrous metal protection of lithium and calcium complex grease is achieved with a combination of SARKOSYL O and Irgacor NPA Test greases SARKOSYL O (%) Irgacor NPA (%) Li-OH-stearate grease (NLGI Grade 2) neat balance Static rust test (ASTM D 1743) Roller bearings, prepacked with grease,stored at 100 % relative humidity and 25 C for 2 weeks Bearing (rating) 3 1 (free of rust) The combination of SARKOSYL O and Amine O, in a synergistic manner, protects metals in calcium complex greases against corrosion. Test greases SARKOSYL O (%) Amine O (%) Irganox L 57 (%) Ca complex grease neat balance Dynamic EMCOR test (IP 220/DIN 51802) Salt water: bearing (rating) 5 (fail) 0 (pass) Date first Edition: April, 1996 Product Name: SARKOSYL O page 4 of 8

5 Corrosion inhibition Lubricants containing SARKOSYL O provide good corrosion control under humid conditions. The combination SARKOSYL O with Amine O exhibits high synergy. Test fluids SARKOSYL O (%) Amine O (%) Na petroleum sulphonate (%) Light spindle oil balance balance balance balance Humidity cabinet test Time to onset of rusting (hrs) Mild steel coated with a light spindle (4 or more rust spots) oil is stored at 100 % relative humidity.temperature cycles between 42 C and 48 C every 75 minutes. Engine oils Corrosion inhibition A combination of SARKOSYL O and Irgacor NPA improves corrosion control of engine oils. Test fluids SARKOSYL O (%) Irgacor NPA (%) Engine oil (1) neat balance Kesternich test (DIN ) Rust rating (%) KFW (2) 40 C, 5 cycles (% rust covering panel surface) 1 cycle: 8 hrs 40 C 80 % humidity 16 hrs cool to RT < 75 % humidity (1) Engine oil API SF/CC SAE 15W/40, contains OCP non-dispersant VI improver (2) KFW Alternation of climate (temperature) under conditions of water condensation (Kondenswasser - Wechselklima) Date first Edition: April, 1996 Product Name: SARKOSYL O page 5 of 8

6 Fuels Corrosion inhibition In fuels metal protectants limit the formation of ions which catalyse oxidation processes leading to gum formation. SARKOSYL O is highly effective at low concentrations. Test fluids SARKOSYL O (ppm) Gasoline neat balance balance Static immersion test Sea water: panel appearance heavy rust no rust no rust Steel panels are partly immersed in a Gasoline: panel appearance heavy rust heavy rust no rust jar containing a mixture of synthetic Vapour: panel appearance heavy rust moderate moderate sea water and straight run gasoline rust rust (1 : 7.5 ). The mixture is shaken vigorously for one minute. The jar is stored for 3 weeks at room temp. Test fluids SARKOSYL O (ppm) Gasoline neat balance balance Dynamic immersion test. Degree of rust on the spindle heavy rust moderate no rust (ASTM D 665 test modified). rust Steel spindles are completely immersed for 3 hours at 26 C in a vigorously stirred mixture of straight run gasoline (300ml) and synthetic sea water (30 ml). Date first Edition: April, 1996 Product Name: SARKOSYL O page 6 of 8

7 Fuels Oxidation inhibition SARKOSYL O has a marked stabilising effect on the oxidation of a test gasoline Test fluids SARKOSYL O (ppm) Gasoline (1) neat balance balance Oxidation stability of gasoline Induction period (hrs) (ASTM D 525) Bomb oxidation, O2 at 690 kpa (100 psi) at 100 C (1) Less stable gasoline containing rust inhibitor, antioxidant, tetraethyl lead and dye. Other corrosion (rust) inhibitors may act as pro-oxidants in the catalysed oxidation of hydrocarbon liquids. Fuels Copper corrosion SARKOSYL O in gasoline at a concentration of 50 ppm does not corrode or tarnish copper. Test fluids SARKOSYL O (ppm) 50 Gasoline neat Automotive gasoline test Copper strip (rating) 1a (ASTM D 130) 50 C for 3 hours Date first Edition: April, 1996 Product Name: SARKOSYL O page 7 of 8

8 Safety and Handling Product Specification Packaging Please read Material Safety Data Sheet ( MSDS ) before handling. This information is available on request through our local representative. This information is available on request through our local representative. Quality Policy The objective of our quality policy is the continuous fulfilment of the internal and external requirements agreed upon with our partners with regards to everybody s performance. As an integral part of the way we conduct our business, we want to focus all the activities of Additives Division in the realm of Research, Development, Production, Marketing and Administration on - fulfilling continuously agreed upon requirements the first time around - identifying and eliminating possible defects as early as possible The Quality System of Additives Division is based on the principles of the SN-ISO-Standard 9001 / EN By means of training and information, all employees are to be familiarised with the divisional quality principles and, consequently, to commit them to acting correspondingly in their area of responsibility. Important The following supercedes Buyer s documents. SELLER MAKES NO REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, INCLUDING OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. No statements herein are to be construed as inducements to infringe any relevant patent. Under no circumstances shall Seller be liable for incidental, consequential or indirect damages for alleged negligence, breach of warranty, strict liability, tort or contract arising in connection with the product(s). Buyer s sole remedy and Seller s sole liability for any claims shall be Buyer s purchase price. Data and results are based on controlled or lab work and must be confirmed by Buyer by testing for its intended conditions of use. The product(s) has not been tested for, and is therefore not recommended for, uses for which prolonged contact with mucous membranes, abraded skin, or blood is intended; or for uses for which implantation within the human body is intended. Ciba Specialty Chemicals Inc. Business Unit Lubricant Additives Additives Ciba Specialty Chemicals Inc., 1997 Reference AD7 Publ. No /96/e CH-4002 Basle Edited in Switzerland Date first Edition: April, 1996 Product Name: SARKOSYL O page 8 of 8