Caustic Soda Flakes 98–99% Bulk — Vadodara Stock

Caustic soda flakes (NaOH 98–99%) from Meghmani, Nirma, Grasim, and GACL channels cover mercerisation, pulp cooking, biodiesel transesterification, and ETP pH correction across Gujarat's chemical belt. Drashti Chemicals stocks branded flakes with batch COA confirming NaOH assay and chloride content — the two numbers your plant chemist actually checks before approving incoming QC.

Flake vs. lye vs. prills: flakes store and handle more safely than 48% lye in plants without bunded tanks; prills flow better in pneumatic conveyors but cost more. For manual dissolution in SS316 day tanks, flakes from Grasim or GACL dissolve in 30–45 minutes at 40 °C with agitation. Specify low-iron grade when supplying to rayon or aluminium anodising lines where Fe contamination stains product.

Dissolution protocol: add flakes to water, never water to flakes — the exotherm can flash-boil and spray caustic. Target 30–50% stock solution for dosing pumps; higher concentrations crystallise in winter lines. Dose rate for neutralisation depends on acid load — typical textile ETP acid wash discharge needs 200–800 mg/L NaOH. Use inline pH probe with fail-safe overflow return. Drashti provides dissolution SOP sheet with first order.

Packaging: 50 kg HDPE bags (standard), 25 kg bags for smaller plants. MOQ one bag; bulk quote on request for monthly 5 MT+ contracts with scheduled delivery to Bharuch, Ankleshwar, and Vapi. MSDS and COA per lot. GST-compliant invoice from Vadodara. Store sealed in dry warehouse — flakes pick up moisture and fuse into blocks that damage dissolution tank agitators.

Caustic flakes vs. soda ash for pH control: caustic gives immediate pH jump without CO₂ off-gassing; soda ash is safer for operators and adds buffering. Caustic vs. lime: caustic costs more per kg OH⁻ but produces no calcium sludge. For CIP in dairy and brewery plants, food-grade caustic lye may be mandated over industrial flakes — confirm your audit requirement before ordering industrial grade.