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Date of Issue : Apr 2000 1. IDENTIFICATION
General Product Name : CITRIC ACID ANHYDROUS Other Names : CITRIC ACID 2-HYDROXY-1,2,3-PROPANETRICARBOXYLIC ACID UN No. : N/A Dangerous Goods Class : None Allocated Subsidiary Risk : None Allocated Hazchem Code : N/A Pack Group : 0 EPG : N/A Poisons Schedule : N/A Uses : Preparation of citrates, flavouring extracts, confections, soft drinks, effervescent salts, acidifier, dispersing agent, medicines, acidulant and antioxidant in foods, sequestering agent, water-conditioning agent and detergent builder, cleaning and polishing stainless steel and other metals, alkyd resins, mordant, removal of sulphur dioxide from smelter waste gases.
1.1 Physical Description / Properties
Appearance : Colourless to white crystals/powder with no odour. Formula : C6H8O7 Boiling Point : Decom deg C Melting Point : 153 deg C Vapour Pressure : N/A Specific Gravity : 1.665 (water = 1) Flash Point : N/A pH : 1.8 (50 g/L) Solubility in water : Sol. g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : N/A Upper Explosion Limit : N/A 1.2 Other Properties
Ignition temperature: 500 deg C. Decomposition temperature = > 170 deg C Solubility in ethanol = 383 g/L Bulk density = 900 - 980 kg/m3 Slightly hygroscopic. 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Adverse effects are not expected. Eye
Irritating to eyes. Skin
Contact with skin may result in moderate irritation. Inhaled
Inhalation of dust or powder is likely to result in respiratory irritation. 2.2 Health Effects - Chronic
Chronic exposure may cause allergic reactions to some individuals.
2.3 First Aid
Swallowed
If swallowed, rinse out mouth and then drink 1 - 3 cups of water. DO NOT induce vomiting. Seek medical attention if necessary.
Eye
Rinse immediately with tap water for 10 minutes - open eyelids forcibly. Consult a physician.
Skin
Remove contaminated clothing, wash affectd skin with soap and water - do not use any solvents.
Inhaled
Remove casualty to fresh air and keep him/her calm.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Treat symptomatically based on judgement of doctor and individual reactions of patient.
2.6 Toxicity Data
Oral (rabbit) LD50: >7000 mg/kg. Oral (mouse) LD50: >5400 mg/kg. Oral (rat) LD50: >6730 mg/kg. Eye - strong irritant (rabbit): 750 ug/24hr. Skin - moderate irritant (rabbit): 500 mg/24hr. Chronic - well tolerated oral (rat): 2000 mg/kg/90 days. Not a carcinogen (rat, mouse), not a teratogenic. GRAS - generally recognised as safe for human consumption.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
An exposure standard has not been established for this product. However, the following exposure is recommended for nuisance dusts : TWA 10 mg/m3.
3.2 Engineering Controls
Transfer and handle only in enclosed systems. Local exhaust ventilation os necessary. Take precautionary measures against electrostatic charging. Avoid dust formation - consider dust explosion hazard.
3.3 Personal Protection
In case of open handling use particle mask or respirator with independant air supply. Use protective gloves and tightly fitting safety glasses.
3.4 Flammability
Not flammable under conditions of use. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Store in closed containers and in a dry place. Store at temperatures between 10 - 25 deg C. Keep away from aluminium, copper, zinc, and steel. Keep away from potassium tartrate, alkalis, alkaline earth carbonates and bicarbonates, metal nitrates, acetates, and sulfides.
4.2 Packaging / Labelling UN No. N/A Class None Allocated Sub Risk None Allocated Hazchem Code N/A Pack Group 0 EPG No. N/A Shipping Name CITRIC ACID ANHYDROUS Hazard IRRITANT
Risk Phrases R36 Irritating to eyes.
Safety Phrases S24/25 Avoid contact with skin and eyes.
4.3 Spills and Disposal
Spills
Clean up personnel should wear full protective clothing including respiratory protection in dusty conditions. Avoid raising dust.
Collect spilled material into suitable containers and hold for later disposal. Flush away spill area residues with copious amounts of water.
Disposal
Dispose according to all local, state, and federal regulations. Incinerate in qualified installation with flue gas scrubbing.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Decomposes when exposed to fire conditions. Products of decomposition may include oxides of carbon, acrid smoke, and irritating fumes. Dust may form explosive mixture with air.
Extinguishing Media
Firefighters should wear full protective clothing including self contained breathing apparatus. Use water spray jet, dry powder, foam, or carbon dioxide as extinguishing media. Precipitate gases/vapours/mists with water spray. 5 OTHER INFORMATION
Other Information
Inherent biodegradability - 98% after 7 days. Ecotoxicity - barely toxic for fish (goldfish) LCo: 625 mg/l. - moderately toxic for planktonic crustaceans (daphnia magna) LCo: 80 mg/l. - barely toxic for micro-organisms (pseudomonas putida) LCo: >10000 mg/l. - barely toxic for protoza (entosiphon salcatum) LCo: 485 mg/l. - barely toxic for algae (scenedesmus quadricauda) LCo: 640 mg/l. - moderately toxic for algae (microcystis aeruginosa) LCo: 80 mg/l.
5.1 Contact Points
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The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use.
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