Sodium saccharin

Catalog Number

ACM128449

CAS

128-44-9

Structure

Synonyms

Saccharin sodium anhydrous

Molecular Weight

205.17

Molecular Formula

C7H4NNaO3S

Melting Point

>300°C

Flash Point

219.3°C

Appearance

White crystalline powder

Active Content

95%

Physical State

Solid

Typical Applications

Use as non-nutritive sweetening agent.

MSDS

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COA

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Spec Sheet

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Case Study

Sodium Saccharin Used for the Preparation of Low-Stress Ni-P-PTFE Electroforming Layers in Micro-Mold Applications

Sodium Saccharin Used for the Preparation of Low-Stress Ni-P-PTFE Electroforming Layers in Micro-Mold Applications Ma, Zhigao, et al. urface and Coatings Technology 494 (2024): 131488.

Sodium saccharin has been effectively applied as a stress-reducing additive in the electroforming of Ni-P-PTFE composite layers used for precision mold inserts. In a recent study, an optimized electrolyte containing 5 g·L⁻¹ sodium saccharin and 1 mL·L⁻¹ alkynyl compound significantly lowered the internal stress of electrodeposited films from -646 MPa to -114 MPa-an 82% reduction-while enhancing self-lubricating properties essential for micro-injection molding.
The electrolyte was prepared by dispersing PTFE in a nickel sulfamate solution containing CTAB as a cationic surfactant. The CTAB-modified PTFE particles were stabilized by ultrasonic mixing to ensure uniform dispersion. Electroforming was conducted at 60 °C with continuous stirring (720 rpm) to promote convective mass transfer. A polished stainless steel substrate served as the cathode, while a pure nickel plate was used as the anode.
Sodium saccharin played a key role in suppressing the hydrogen evolution reaction, reducing hydrogen-induced stress, and modifying crystallographic texture. The presence of sodium saccharin also facilitated the partial incorporation of organic reaction products, which disrupted grain boundaries and further alleviated internal stress.
The resulting Ni-P-PTFE molds exhibited high fidelity in microstructural replication with minimal pile-up at groove corners, confirming the mechanical reliability and surface performance of the low-stress electroformed layer. This highlights sodium saccharin's effectiveness in advanced electroforming applications for precision tooling and microfabrication.

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