氢氟酸的MSDS un no1790.doc

MATERIAL SAFETY DATA SHEET1. IDENTIFICATION GeneralProduct Name : HYDROFLUORIC ACID Other Names : HYDROGEN FLUORIDE ，FLUOROHYDRIC ACID UN No. : 1790Dangerous Goods Class : 8 Subsidiary Risk : 61 Hazchem Code : 4WE Pack Group : I EPG : 40 Poisons Schedule : 7 Uses : Chemical intermediate, etching and polishing of glass and pottery, cleaning of metals, mineral extraction. 1.1 Physical Description / Properties Appearance : A colourless liquid with a sharp irritating odour which forms a dense cloud of vapour on release to the atmosphere. Formula : HF Boiling Point : 19.5 deg C Melting Point : -88.5 deg C Vapour Pressure : 900 mm Hg (1 atmosphere) Specific Gravity : 1.002 (water = 1) Flash Point : N/A pH : 1 ( 70%) Solubility in water : Misc 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 HF acid as liquid or vapour is extremely corrosive and toxic Concentrations in excess of 10ppm are intolerable to breath Concentrations of 25ppm may be fatal Solubility in water = miscible. Evaporation rate = 100% at ambient temperature. 1.3 Ingredients Chemical Entity CAS No. Proportions (%) HYDROFLUORIC ACID 7664-39-3 702. HEALTH HAZARD INFORMATION 2.1 Health Effects - AcuteSwallowed Severe burning and/or perforation of the digestive system which may lead to death. Very toxic if ingested. Eye Hydrogen fluoride vapours can dissolve in the moisture on the surface of the eyes and cause irritation. Splashing into the eyes may cause severe and irreversible damage with possible corneal scarring and permanent blindness. Skin Hydrogen fluoride can cause deep and excrutiatingly painful skin burns. Burns from strong solutions (50-70%) are felt immediately. Weaker solutions (25%) may take a few minutes to be noticed. Serious skin splashes have caused death. Inhaled Weak vapour concentrations of a few ppm can produce irritation of the nose, throat, eyes and respiratory tract. High vapour concentrations can cause severe burns to the lips, mouth, throat and lungs. Fluid accumulation in the lungs may occur and can lead to death. Can also cause ulcers of the upper respiratory tract. 2.2 Health Effects - ChronicThe major health hazards of hydrogen fluoride exposure are related to its irritant and corrosive properties during short-term (acute) exposures. There is less risk associated with its possible long-term exposure effect. FLUORISIS : fluoride tends to accumulate in the bones and excessive amounts will produce weakening and degeneration of the bone structure (osteosclerosis). There may also be heart, nerve, and intestinal problems. The disease is called fluorisis. Fluorisis may be slowly and partially reversible. Very serious irreversible effects, may cause death. In case of prolonged and repeated exposure the absorption of fluoride into the blood can can fluorisis (fixing of the calcium in the bones by fluorides). 2.3 First AidSwallowedRescuer should wear appropriate personal protection to avoid skin contamination and breathing hydrogen fluoride. Do not give anything by mouth if victim is losing consciousness or is unconscious or convulsing. Rinse mouth of victim thoroughly with water and spit out. DO NOT INDUCE VOMITING. Give large quantities of water containing 6 tablets of effervescent calcium gluconate every 2 hours until admitted to hospital. Obtain medical attention immediately. Monitor and reassure the affected person. EyeImmediately flush the contaminated eye(s) with abundant water keeping the eyelid(s) open. Continue irrigation with normal isotonic saline solution or water enroute to nearest hospital. Obtain medical attention immediately. Monitor and reassure the affected person. NOTE : do not use any of the skin treatment preparation for burns of the eye. SkinFirst aid personnel should avoid contact with this chemical. Wear impervious gloves when assisting patient. Immediately remove soiled or splashed clothing. Wash immediately with with abundant water to aid in diluting any contamination then rub calcium gluconate gel to the affected areas until 15 minutes after local pain ceases. Obtain medical attention immediately.Monitor and reassure the affected person. For burns on the skin affecting more than 65 cm2 (approximately the area of the palm of the hand), give 6 effervescent calcium gluconate tablets dissolved in water (400mg of calcium each) every 2 hours until patient is admitted to hospital. (Do not give fluid to unconscious person or those with breathing / respiratory difficulties) InhaledRescuer should wear appropriate personal protection to avoid skin contamination and breathing hydrogen fluoride fumes. Remove patient from the danger area, make him / her as comfortable as possible and protect him / her from the cold. Administer calcium gluconate as for skin contact. If breathing is laboured, give oxygen through face mask Obtain medical attention immediately. Monitor and reassure the affected person. First Aid FacilitiesSafety shower and eyewash stations immediately accessible to the workplace where HF is being used. It is preferable to have these hooked up to an alarm system so that other workers are made aware and can assist in any emergency. Calcium gluconate tablets each containing 400mg calcium gluconate/20mg ascorbic acid. Calcium gluconate gel 2.5% by wt. Impervious (rubber medical) gloves. Positive pressure self-contained breathing apparatus for use by first aid personnel. Isotonic saline and/or sterile water supply. Blankets to keep affected person warm. 2.5 Advice to DoctorUrine fluoride levels of greater than 4mg/litre are considered unacceptable. Levels below this are not considered to cause chronic bone defects such as fluorisis. Increases in bone density due to fluoride deposition can be detected by x-ray. 2.6 Toxicity DataInhalation LC50 = 4970 ppm (rat, 5 min); 18200 ppm (rat, 5 min); 1310 ppm (rat 1 hour); 11080 ppm (rat, 1 hour); 6247 ppm (mice, 5 min); 4320 ppm (guinea pig, 15 min); 1774 ppm (monkey, 1 hour). Ccarcinogenicity = No specific data is available. There is no evidence of an association between human cancer and exposure to inorganic fluorides. Teratogenicity and embryotoxicity = There is inconclusive data from animal studies suggesting possible reproductive effects. There are no report of effects on humans. Toxicological synergistic materials = Insufficient information. Mutagenicity = Insufficient data There is a potential for fluoride to be stored in the bone, but it may be eliminated over a number of years. 3. PRECAUTIONS FOR USE 3.1 Exposure StandardsThe following exposure standard is recommended by Longfu Chemical : Hydrogen fluoride (as F) : TWA 3 ppm (2.6 mg/m3) Peak limitation STEL = 6 ppm IDLH = 20 ppm 3.2 Engineering ControlsEnsure adequate ventilation to maintain exposure levels below the recommended standards. Total enclosure may be needed in operations involving HF liquid. Adequate general (dilution) and local exhaust ventilation is also required. 3.3 Personal ProtectionIf engineering controls, work practices, and administrative controls are not effective in reducing the concentration of airborne contaminant below the recommended exposure limit, wear suitable, approved respiratory protection. If respiratory protection is required, institute a complete respiratory protection program including selection, fit testing, training, maintenance, inspection, cleaning and evaluation. Eye Protection : Fitted Chemical prot- ective goggles preferable hermetic with plastic lenses. Full face shield whenever AHF may splash. Glove type : Gauntlets of suitable material (eg Viton, neoprene). Protective clothing : For plant operation - normal protective overalls with long sleeves and leggings. If a probability of skin contact - suitable plastic clothing or plastic suit and self contained breath- ing apparatus. Protective clothing used specifically for HF operations should be clearly marked, preferably with distinctive colour(s), to differentiate it from other protective clothing. All protective clothing must be regularly cleaned, checked and maintained. 3.4 FlammabilityProduct non flammable. SAFE HANDLING INFORMATION 4.1 Storage / TransportAt concentrations of 70% or less, HF may be stored in plastic (polyethylene or PVC) vessels. Protect storage containers from heat or direct sunlight. The storage area should have adequate, independent, ventilationand have no sources of heat or sparks. Fans or other electrical equipment should be spark-resistant In some containers HF degrades to produce flammable hydrogen gas. When opening HF containers ensure that no sparks or sources of ignition are present and that the work area is well ventilated. Use extreme caution in all procedures involving HF. Open containers of HF should not be left unattended. When splash or inhalation exposure is possible, appropriate protective clothing must be worn. Not to be loaded with Class 1, 4.3, 5.1, 5.2, 6*, 7, Foodstuff and foodstuff empties (* Where the Class 6 substance is a cyanide and Class 8 substance is an acid). Keep away from metals (steel, copper, aluminium) and glass. 4.2 Packaging / LabellingUN No. 1790Class 8 Sub Risk 6.1 Hazchem Code 4WE Pack Group I EPG No. 40 Shipping Name HYDROFLUORIC ACID Hazard VERY TOXIC CORROSIVE Risk PhrasesR26/27/28 Very toxic by inhalation, in contact with skin and if swallowed. R35 Causes severe burns. R41 Risk of serious damage to eyes. Safety PhrasesS7/9 Keep container tightly closed and in a well ventilated place. S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 Wear suitable protective clothing and gloves. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible). 4.3 Spills and DisposalSpillsClean-up personnel should wear full protective clothing including self-contained breathing apparatus. Restrict persons not wearing protective equipment from area of leak until clean-up is complete. Ventilate spill area. Do not allow spilled material to enter sewers or watercourses. Allow spill to vapourise and disperse, or cover with sodium carbonate (soda ash) or an equal mixture of soda ash and slaked lime. After mixing, add water if necessary to form a slurry. Collect material in suitable containers for later disposal. Wash spill sites thoroughly. DisposalDispose of in accordance with all Local, State and Federal regulations at an approved waste disposal facility. Do not eliminate the substance in the sewers. Keep residue in containers adapted for subsequent treatment. 4.4 FIRE AND EXPLOSION HAZARDFire / Explosion Material is stable under normal conditions of temperature and pressure. Avoid contact with bases (eg. caustic soda) - can react violently. The acid will dissolve glass, ceramics, metals containing silica, natural gum rubber and leather. Fluorine gas reacts vigorously with this material, and may burst into flames. Reaction with arsenic trioxide can be extremely hot. Hazardous polymerisation has not been reported. Can dissolve metals containing silica giving off potentially explosive hydrogen gas. Wax, lead and platinum are not corroded. Product reacts with water or steam to produce toxic and corrosive fumes. Violent reaction with AS2O3, Acetic anhydrite, 2 Amino ethanol, etc. Extinguishing MediaFire-fighters should wear full protectiv