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Date of Issue : Mar 2001 1. IDENTIFICATION
General Product Name : BHT Other Names : 2,6-DI-TERT-BUTYL-4-METHYL PHENOL BUTYLATED HYDROXYTOLUENE 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 : Antioxidant for petroleum products, jet fuels, rubber, plastics and food products, food packaging, animal feeds. Satisfies ASTM D910-64T for use in aviation gasoline.
1.1 Physical Description / Properties
Appearance : White crystalline powder with faint phenolic odour. Formula : C15H24O Boiling Point : 265 deg C Melting Point : 68 deg C Vapour Pressure : <1 mm Hg (1 atmosphere) Specific Gravity : 1.01 (water = 1) Flash Point : Closed Cup 118 pH : N/A () Solubility in water : Insol 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
Soluble in methanol, ethanol, isopropanol, naphtha, benzene, methyl ethyl ketone and linseed oil. Insoluble in water and 10% sodium hydroxide. Vapour density: 7.6. Molecular weight: 220.34. 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Harmful if ingested. May cause abdominal pain, diarrhoea, dizziness, headache and vomiting. Eye
Dust may cause irritation, redness and pain. Skin
Skin absoprtion not likely. May cause s;ight transient irritation, redness and pain. Inhaled
May cause respiratory tract irritation, coughing and sore throat. 2.2 Health Effects - Chronic
Not a carcinogen. Inhalation of product may aggravate existing chronnc respiratory problems such as asthma, emphysema or bronchitis. Skin contact may aggravate existing skin disease or cause dermatitis.
2.3 First Aid
Swallowed
If victim is conscious and alert, give 2-3 glasses of water to drink and induce vomiting by touching back of throat with finger. Do not induce vomiting or give anything by mouth to an unconscious person. Seek immediate medical attention. Do not leave victim unattended. Vomiting may occur spontaneously. To prevent aspiration of swallowed product, lay victim on side with head lower than waist. If vomiting occurs and the victim is conscious, give water to further dilute the chemical.
Eye
Hold eyelids open and flush with a steady, gentle stream of water for at least 15 minutes. Seek medical attention if irritation develops or if visual changes occur.
Skin
In case of contact, immediately wash with plenty of soap and water ofr at least 5 minutes. Seek medical attention if irritation develops or persists. Remove contimated clothing and shoes and clean before reuse.
Inhaled
If respiratory irritation or distress occurs, remove victim to fresh iar. Seek medical attention if respitatory irritation or distress continues.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
All treatments should be based on observed signs and symptoms of distress in the patient. Consoderation should be given to the possibility that overexposure to materials other than this product may have occurred. No specific antidote available.
2.6 Toxicity Data
Eye irritation (rabbit): 100 mg/24hr - moderately irritating. Skin irritation (rabbit): 500 mg/48hr - moderately irritating. Skin irritation (human): 500 mg/48hr - moderately irritating. Oral (guinea pig) LD50: 10700 mg/kg. Oral (rat) LD50: 890 mg/kg. Oral (mouse) LD50: 650 mg/kg. Oral (human) LD50: <440 mg/kg. LDLo (human): >80mg/kg. Contains no materials that are listed as probable or suspected human carcinogens.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
TWA (ACGIH) : 10 mg/m3. TWA (OSHA) : 10 mg/m3.
3.2 Engineering Controls
Where engineering controls are indicated by use conditions or a potential for excessive exposure exists, the following traditional expsoure control techniques may be used to effectively minimise employee exposures: local exhaust ventilation at the point of generation.
3.3 Personal Protection
When respirators are required, select an NIOSH/MSHA approved equipment based on actual or potential airbourne concentrations and in accordance with the appropriate regulatory standards and/or industrial recommendations. Under normal conditions, in the absence of other airbourne contaminants, the following devices should provide protection from the material up to the conditions specified by the appropriate OSHA, WHMIS, or ANSI standard(s): Air purifying (half mask/full mask) respirator with cartidges/canister approved for use against dusts, mists and fumes. Use chemical safety glasses with side shields or splash proof goggles. Use gloves and suitable long sleeved clothing. Do not eat, drink, smoke or use cosmetics whilst handling product. Wash hands and face before eating, drinking, smoking, or using toilet.
3.4 Flammability
Product will burn when exposed to heat. May form explosive mixture when dust mixed with air. Product is combustible. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Provide electrical grounding, or inert atmosphere when material used in presence of flammable materials to prevent ignition. Store in tightly closed containers, in a dry, well ventilated area. Store away from strong acids and strong oxidising agents.
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 BHT Hazard HARMFUL
Risk Phrases R20/21/22 Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 Irritating to eyes, respiratory system and skin. R41 Risk of serious damage to eyes.
Safety Phrases S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 Wear suitable protective clothing. S22 Do not breathe dust.
4.3 Spills and Disposal
Spills
Clean up personnel should wear suitable protective clothing. Do not allow spilled material to enter sewers or waterways. Remove all sources of ignition.
SMALL SPILL - shovel up and place in a labelled, sealable container for subsequent safe disposal. Dampen spill with water prior to sweeping if necessary Scrub contaminated surfaces with detergent solution. Retain washings as contaminated waste. Put leaking containers in a labelled drum or overdrum. LARGE SPILL - transfer to a labelled, sealable container for product recovery or safe disposal. Treat residues as for small spillage. DO NOT flush away residues with water. Retain as contaminated waste.
Disposal
Recover or recycle if possible. Dispose of in accordance with all Local, State and Federal regulations at an approved waste disposal facility.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Product will burn under fire conditions. Dust may form explosive mixture with air. Products of decomposition include oxides of carbon.
Extinguishing Media
Firefighters should wear full protective cltohing including self contained breathing apparatus. Use carbon dioxide, water spray, dry chemical or foam as extinguishing media. 5 OTHER INFORMATION
Other Information
Ecotoxicological data have not been determined specifically for this product. Information given is based on data on the components and the ecotoxicology of similar products. Mobility : sinks in water. Adsorbs to soil and is not mobile Persistence/degradability : not readily biodegradable Bioaccumulation : has the potential to bioaccumulate Acute toxicity - fish : not toxic at the limit of water solubility Acute toxicity - daphnia : not toxic at the limit of water solubility Acute toxicity - algae : not toxic at the limit of water solubility Acute toxicity - bacteria : slightly toxic, 10 < EC50 <= 100 mg/L Sewage treatment : slightly toxic, 10 < EC50 <= 100 mg/L, to organisms in sewage treatment plants (estimated) Other information : chronic toxicity 21 day daphnia - very toxic EC50 <1 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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