MATERIAL SAFETY DATA SHEET
毫不气馁的意思1. IDENTIFICATION
General
Product Name : HYDROFLUORIC ACID
Other Names : HYDROGEN FLUORIDE ，FLUOROHYDRIC ACID
UN No. : 1790广州复读学校
Dangerous Goods Class : 8
Subsidiary Risk : 61
Hazchem Code : 4WE
Pack Group : I
EPG : 40
Poisons Schedule : 7
Us :
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 den cloud o
f vapour on relea 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 (%) |
ymgHYDROFLUORIC ACID | [ 7664-39-3]规格翻译 | 70 |
| | |
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute
Swallowed
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 cau irritation. Splashing into the eyes may cau vere and irreversible damage with possible corneal scarring and permanent blindness.
Skin
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Hydrogen fluoride can cau deep and excrutiatingly painful skin burns. Burns from strong solutions (50-70%) are felt immediately. Weaker solutions (25%) may take a few m
inutes to be noticed. Serious skin splashes have caud death. farm什么意思
Inhaled
Weak vapour concentrations of a few ppm can produce irritation of the no, throat, eyes and respiratory tract. High vapour concentrations can cau vere burns to the lips, mouth, throat and lungs. Fluid accumulation in the lungs may occur and can lead to death. Can also cau ulcers of the upper respiratory tract.
2.2 Health Effects - Chronic
The 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 dia is called fluorisis. Fluorisis may be slowly and partially reversible. Very rious irr
eversible effects, may cau death. In ca of prolonged and repeated exposure the absorption of fluoride into the blood can can fluorisis (fixing of the calcium in the bones by fluorides).
会计电算化软件
2.3 First Aid
Swallowed
谁动了我的奶酪下载Rescuer 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. Rin 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. 马达加斯加3高清下载
Eye
Immediately flush the contaminated eye(s) with abundant water keeping the eyelid(s) ope
n. 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 u any of the skin treatment preparation for burns of the eye.
Skin
First 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 ceas. 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 tho with breathing / respiratory difficulties)
Inhaled
Rescuer 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.
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