Sodium gluconate ( C6H11NaO7 ) ,also known as sodium pentahydroxy organic acid, is a white crystalline granule or powder with a relative molecular mass of 218.14, a melting point of about 206 C, PH of 6.2 to 7.8, very soluble in water, slightly soluble in ethanol, insoluble in ether. Non-toxic, with good thermal stability, no deliquescence. As a retarder for cement: adding a certain amount of sodium gluconate to cement can increase the plasticity and strength of concrete, and its retardation will delay the initial and final solidification time of concrete. Delivery: 1.Qingdao Port is the best choice for us , but we can also choose Tianjin Port or other ports to meet customers' needs. 2.We have a professional logistics center to ensure the safety and convenience of cargo transportation. 3.A 20ft container can carry 24 to 26 tons without pallets. 4.The delivery date is generally 3~7 days after the payment.