Soda Ash (Washing Soda) - Dense
Soda Ash (Washing Soda) - Dense
Soda Ash (Washing Soda) (Dense, Sodium Carbonate)
Our Soda Ash (Washing Soda) is dense sodium carbonate, a free-flowing white granular powder that has been used for laundry for generations. It softens hard water so detergents and soaps work better, and it is a simple, low-cost ingredient for homemade laundry powder and heavy-duty cleaning.
Crafters also use soda ash as a dye fixer for plant-based fibres such as cotton, and it is used to raise the pH of pool water. It is strongly alkaline, so wear gloves and eye protection. It is not for use on skin.
|
Sodium carbonate Dense, free-flowing granules |
Laundry Water softener and booster |
Dye fixer Pre-soak for fibre-reactive dyes |
500 g to 10 kg Five pack sizes |
Safety information: for household and craft use only. It causes serious eye irritation and is strongly alkaline. Wear gloves and eye protection, avoid breathing the dust and keep out of reach of children. Not for use on skin. See Safety below and the Safety Data Sheet in the Product Documents section at the end of this page.
Specifications
| Specification | Detail |
|---|---|
| Product | Soda Ash Dense (Washing Soda) |
| Chemical name / CAS | Sodium carbonate, anhydrous, CAS 497-19-8 |
| Formula | Na2CO3 (molecular weight 105.99) |
| Purity | 99% minimum (typical) |
| Appearance | White dense granular powder |
| Odour | Odourless |
| pH | About 11.3 (10 g/L solution) |
| Bulk density | About 0.9–1.1 g/cm³ (dense grade) |
| Solubility | Soluble in water |
| Hazard summary | Causes serious eye irritation. Strongly alkaline |
| Suitable for | Laundry, water softening, cleaning, dye fixing and pool pH adjustment |
| Not suitable for | Skin, cosmetics, food or internal use. Do not use on aluminium |
| Pack Sizes | 500 g, 1 kg, 2 kg, 5 kg, 10 kg |
| Storage | Sealed, cool and dry. Keep away from moisture and acids |
| Use | Raw material for household and craft use |
Uses
| Use | How it is used |
|---|---|
| Laundry booster | Add to the wash to soften water and help detergent lift dirt |
| Homemade laundry powder | Blended with grated soap and other dry ingredients |
| Heavy-duty cleaning | Dissolve in hot water for degreasing and cleaning (rinse well, wear gloves) |
| Dye fixer | Soak natural-fibre fabric before using fibre-reactive dyes in tie dye and other dyeing |
| Water softening | Added to soften hard water for laundry and cleaning |
| Pool pH adjustment | Used to raise pH in pools (follow your pool supplier’s guidance) |
How to Use Soda Ash as a Laundry Booster
- Protect yourself. Wear gloves, avoid breathing the dust and keep it away from the eyes.
- Measure. Use about 1/4 to 1/2 cup (roughly 50–100 g) per load.
- Add to the machine. Sprinkle into the drum with the washing, or dissolve in warm water first.
- Wash as usual. Add your detergent and wash as normal.
- Rinse and store. Rinse any splashes off surfaces and close the container tightly.
Tip: Do not use washing soda on aluminium, wool, silk or fabrics that are sensitive to alkalis.
Usage Starting Points ▼
These are common starting points, not fixed rules. Test on a small hidden area first.
| Use | Starting amount | Notes |
|---|---|---|
| Laundry load | 1/4–1/2 cup (about 50–100 g) | Add to the drum with your detergent. |
| Dye fixer soak | About 1 cup (about 200 g) per 4 L water | Soak the fabric for about 20 minutes, then follow your dye instructions. |
| Cleaning solution | 1 tbsp in 1 L hot water | Wear gloves. Rinse surfaces well. |
Never mix with acids in a closed container, as the gas released can build up pressure.
Tips & Troubleshooting ▼
| Problem | Likely cause | What to try |
|---|---|---|
| Powder is hard or lumpy | Absorbed moisture from the air | Store sealed and dry. Break up lumps before using. |
| Dull or damaged surfaces | Too strong an alkaline solution | Test on a hidden area first, dilute more and rinse well. |
| Dye colour is weak | Fabric not pre-soaked | Soak in a soda ash solution before applying fibre-reactive dye. |
| Skin feels dry after handling | Alkaline contact | Wear gloves, wash with water and moisturise. |
Safety & Handling ▼
Soda ash is strongly alkaline and causes serious eye irritation. Wear gloves and eye protection, avoid breathing the dust and keep it out of reach of children. Do not swallow it. In case of eye contact, rinse with plenty of water for at least 15 minutes and seek medical advice. If swallowed, rinse the mouth and call the NZ National Poisons Centre on 0800 764 766.
This product is not suitable for use on skin or in cosmetics and soap.
Selling what you make? This is a raw material sold for household and craft use. If you sell anything you make with it, the formulation, safety assessment, labelling and any regulatory requirements for your finished product are your responsibility. Contact us at info@purefx.co.nz if you need product information.
Frequently Asked Questions ▼
Is soda ash the same as washing soda?
Yes. Soda ash and washing soda are both sodium carbonate.
Is it the same as baking soda?
No. Baking soda is sodium bicarbonate, which is much milder. Do not swap them for each other.
Can I use it in soap making?
No. It is not a substitute for the sodium hydroxide used in soap making and is not for use on skin.
Can I use it in a pool?
Soda ash is used to raise the pH of pool water. Follow your pool supplier’s guidance.
How should I store it?
Sealed, cool and dry, away from moisture and acids.
Sizes & Price
| Pack | Price | Price per kg |
|---|---|---|
| 500 g | $2.90 | $5.80 |
| 1 kg | $4.90 | $4.90 |
| 2 kg | $8.00 | $4.00 |
| 5 kg | $19.00 | $3.80 |
| 10 kg | $36.00 | $3.60 |
Pairs Well With
For laundry, pair with borax and baking soda, and add lemon or lavender essential oil for a fresh scent. Use citric acid separately for descaling, as the two react together. Browse all raw ingredients. |
 Product Documents
|
Couldn't load pickup availability
Soda Ash (Washing Soda) (Dense, Sodium Carbonate)
Our Soda Ash (Washing Soda) is dense sodium carbonate, a free-flowing white granular powder that has been used for laundry for generations. It softens hard water so detergents and soaps work better, and it is a simple, low-cost ingredient for homemade laundry powder and heavy-duty cleaning.
Crafters also use soda ash as a dye fixer for plant-based fibres such as cotton, and it is used to raise the pH of pool water. It is strongly alkaline, so wear gloves and eye protection. It is not for use on skin.
|
Sodium carbonate Dense, free-flowing granules |
Laundry Water softener and booster |
Dye fixer Pre-soak for fibre-reactive dyes |
500 g to 10 kg Five pack sizes |
Safety information: for household and craft use only. It causes serious eye irritation and is strongly alkaline. Wear gloves and eye protection, avoid breathing the dust and keep out of reach of children. Not for use on skin. See Safety below and the Safety Data Sheet in the Product Documents section at the end of this page.
Specifications
| Specification | Detail |
|---|---|
| Product | Soda Ash Dense (Washing Soda) |
| Chemical name / CAS | Sodium carbonate, anhydrous, CAS 497-19-8 |
| Formula | Na2CO3 (molecular weight 105.99) |
| Purity | 99% minimum (typical) |
| Appearance | White dense granular powder |
| Odour | Odourless |
| pH | About 11.3 (10 g/L solution) |
| Bulk density | About 0.9–1.1 g/cm³ (dense grade) |
| Solubility | Soluble in water |
| Hazard summary | Causes serious eye irritation. Strongly alkaline |
| Suitable for | Laundry, water softening, cleaning, dye fixing and pool pH adjustment |
| Not suitable for | Skin, cosmetics, food or internal use. Do not use on aluminium |
| Pack Sizes | 500 g, 1 kg, 2 kg, 5 kg, 10 kg |
| Storage | Sealed, cool and dry. Keep away from moisture and acids |
| Use | Raw material for household and craft use |
Uses
| Use | How it is used |
|---|---|
| Laundry booster | Add to the wash to soften water and help detergent lift dirt |
| Homemade laundry powder | Blended with grated soap and other dry ingredients |
| Heavy-duty cleaning | Dissolve in hot water for degreasing and cleaning (rinse well, wear gloves) |
| Dye fixer | Soak natural-fibre fabric before using fibre-reactive dyes in tie dye and other dyeing |
| Water softening | Added to soften hard water for laundry and cleaning |
| Pool pH adjustment | Used to raise pH in pools (follow your pool supplier’s guidance) |
How to Use Soda Ash as a Laundry Booster
- Protect yourself. Wear gloves, avoid breathing the dust and keep it away from the eyes.
- Measure. Use about 1/4 to 1/2 cup (roughly 50–100 g) per load.
- Add to the machine. Sprinkle into the drum with the washing, or dissolve in warm water first.
- Wash as usual. Add your detergent and wash as normal.
- Rinse and store. Rinse any splashes off surfaces and close the container tightly.
Tip: Do not use washing soda on aluminium, wool, silk or fabrics that are sensitive to alkalis.
Usage Starting Points ▼
These are common starting points, not fixed rules. Test on a small hidden area first.
| Use | Starting amount | Notes |
|---|---|---|
| Laundry load | 1/4–1/2 cup (about 50–100 g) | Add to the drum with your detergent. |
| Dye fixer soak | About 1 cup (about 200 g) per 4 L water | Soak the fabric for about 20 minutes, then follow your dye instructions. |
| Cleaning solution | 1 tbsp in 1 L hot water | Wear gloves. Rinse surfaces well. |
Never mix with acids in a closed container, as the gas released can build up pressure.
Tips & Troubleshooting ▼
| Problem | Likely cause | What to try |
|---|---|---|
| Powder is hard or lumpy | Absorbed moisture from the air | Store sealed and dry. Break up lumps before using. |
| Dull or damaged surfaces | Too strong an alkaline solution | Test on a hidden area first, dilute more and rinse well. |
| Dye colour is weak | Fabric not pre-soaked | Soak in a soda ash solution before applying fibre-reactive dye. |
| Skin feels dry after handling | Alkaline contact | Wear gloves, wash with water and moisturise. |
Safety & Handling ▼
Soda ash is strongly alkaline and causes serious eye irritation. Wear gloves and eye protection, avoid breathing the dust and keep it out of reach of children. Do not swallow it. In case of eye contact, rinse with plenty of water for at least 15 minutes and seek medical advice. If swallowed, rinse the mouth and call the NZ National Poisons Centre on 0800 764 766.
This product is not suitable for use on skin or in cosmetics and soap.
Selling what you make? This is a raw material sold for household and craft use. If you sell anything you make with it, the formulation, safety assessment, labelling and any regulatory requirements for your finished product are your responsibility. Contact us at info@purefx.co.nz if you need product information.
Frequently Asked Questions ▼
Is soda ash the same as washing soda?
Yes. Soda ash and washing soda are both sodium carbonate.
Is it the same as baking soda?
No. Baking soda is sodium bicarbonate, which is much milder. Do not swap them for each other.
Can I use it in soap making?
No. It is not a substitute for the sodium hydroxide used in soap making and is not for use on skin.
Can I use it in a pool?
Soda ash is used to raise the pH of pool water. Follow your pool supplier’s guidance.
How should I store it?
Sealed, cool and dry, away from moisture and acids.
Sizes & Price
| Pack | Price | Price per kg |
|---|---|---|
| 500 g | $2.90 | $5.80 |
| 1 kg | $4.90 | $4.90 |
| 2 kg | $8.00 | $4.00 |
| 5 kg | $19.00 | $3.80 |
| 10 kg | $36.00 | $3.60 |
Pairs Well With
For laundry, pair with borax and baking soda, and add lemon or lavender essential oil for a fresh scent. Use citric acid separately for descaling, as the two react together. Browse all raw ingredients. |
|
Product Documents
|
