Product Name:Naphthalene based superplasticizer/Sodium Naphthalene sulfonate/sodium naphthalene sulfonate formaldehyde condensation/sulfonated naphthalene formaldehyde/sodium naphthalene sulfuric acid formaldehyde CAS No.: 9084-06-4 HS No.:382440100 Chemical Formula:(C11H7O4SNa)n Payment:T/T Delivery:Within 15 days after payment. Raw materials:crude naphthalene,concentrated sulfuric acid,formaldehyde,liquid alkali Specification: Appearance yellow powderyellow powder yellow powder Solid content 92% min 92% min 92% min Sodium sulfate content 5% max 10% max 18% max Chloride content 0.3% max0.4% max 0.5% max PH 7~97~9 7~9 Fluidity of cement paste 250 mm min 240 mm min 230 mm min Package and Storage: Package:25 kg plastic bags with PP liner,Alternative package may be available upon request. Storage:Shelf-life time is 2 years if kept in cool,dried place.Test should be done after expiration.