USAGE:Glass, enamel, paper pulp, cooling mixture, detergent, drying, dye dilution, analysis of chemical reagents and pharmaceuticals. Property: white granular crystal or powder , Na2SO4 is white rhombic crystal . Have the stimulation to the eye and skinbasic non-toxic . Health effects :No adverse sffects expects expected,it can be applied for pharmic ingredient. Environment effects :No. personal Protection protective Gloves:chemical resistant gloves. Eye protection :Appropriate goggles . Inhalation : Purifying respirator In case of repeated or prolonged skin contact ,protective clothing should be worn . First Aid skin-contact : wash skin with water , Eye-contact : flush with water for at least 15 min.call physician if symptoms occur. Inhalation :Remove to freshair ,Obtaint medical attention for all cases. Handling and storage prevent expousure to high temperature and fiames . prevent exposure to scrong acid materials .keep container tightly sealed to prevent moisture/vapor exchange , score in a clean and dry area . ItemGB6009-2003Analysis resultI type First gradeNa2SO4≥99.099.35Water insoluble matter %≤0.050.03Ca & Mg %(Mg)≤0.150.019(0.094)Chloride %(Cl)≤0.350.162(0.267)(Fe)≤0.0020.001Moisture %≤0.200.034Whiteness %≥8287PHNONO GOOD PRODUCTS AND COMPECTITIVE PRICE! If you are interested in this product,please contact us: 0086-20-81276550-804 youmay send SMS to tell me your online contact details such as e-mail address,MSN,skype,yahoo etc. your kind reply is highly appreciated! best regards ! Looking forward to your trail order .thanks.