Soda lime
Soda lime (CAS: 8006-28-8) is a mixture of calcium hydroxide and sodium hydroxide, often with potassium hydroxide. This white granular solid is primarily used as a carbon dioxide absorbent in anaesthesia, respiratory therapy, and gas purification. Its highly alkaline nature makes it effective for removing acidic gases. TSS supplies Soda lime with a focus on quality and reliable performance for laboratory and industrial applications.

Carbon Dioxide Absorption
Soda lime is extensively used to absorb carbon dioxide from gas streams, a critical function in anaesthetic circuits and rebreathers. It effectively removes CO2 produced by respiration, preventing rebreathing of exhaled gas.
Gas Purification
Beyond anaesthesia, Soda lime serves as a reagent for purifying various gases by removing acidic impurities. Its efficacy in trapping CO2 makes it suitable for applications requiring clean air or inert gas environments.
Chemical Synthesis
As a strong inorganic base, Soda lime can be employed in specific chemical synthesis reactions where a solid alkali is required. It participates in dehydrohalogenation and other base-catalysed transformations.
| Loss on drying | ≤7% loss on drying |
|---|---|
| Particle size | +100 mesh |
| Impurities tested | ≤1% Fines |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1907 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 35 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Soda lime used for?
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Soda lime is primarily used for absorbing carbon dioxide in anaesthesia and respiratory therapy, as well as for general gas purification and in certain chemical synthesis applications.
What is the CAS number and formula for Soda lime?
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The CAS number for Soda lime is 8006-28-8. It is a mixture and does not have a single definitive chemical formula.
What grade and purity does Tech Serve Solutions supply for Soda lime?
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Tech Serve Solutions supplies Soda lime typically as a technical or laboratory grade. Specifications include ≤1% fines and ≤7% loss on drying, with a particle size of +100 mesh. We do not represent this product as USP, BP, or EP grade.
How should Soda lime be handled safely?
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Soda lime is a corrosive substance (H314) that causes severe skin burns and eye damage. Handle with appropriate personal protective equipment, including eyeshields, gloves, and a full-face particle respirator (N100 or P3). Ensure adequate ventilation and avoid generating dust.
How is Soda lime packed and shipped by TSS?
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Soda lime is packed according to UN 1907, Class 8, Packing Group III regulations. TSS ensures secure packaging for export and domestic shipment, adhering to all relevant transport guidelines.
How can I request a sample or quote for Soda lime?
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To request a sample or a quote for Soda lime, please contact our sales department via the website or by phone, providing your specific requirements and delivery details.
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