Is liquid soap acidic or alkaline?

It depends on the product. According to their SDSs, START Hand Cleaning Liquid has a pH of 5–7 and START Foam Hand Soap 5.5–7; both lie between slightly acidic and neutral. For any other soap, check that product's own safety data sheet.

What is the pH of foam soap?

According to its SDS, START Foam Hand Soap has a pH of 5.5–7. It is used in foam pump bottles or foam soap dispensers; its sheet carries the signal word Warning and H319.

What is the pH of hand cleaning liquid?

According to its SDS, START Hand Cleaning Liquid has a pH of 5–7. Its sheet appears in our list as START Hand Soap and can be requested.

What should you do if a near-neutral soap gets into the eyes?

The pH value does not cancel the eye warning; the SDSs of both products list H319 (causes serious eye irritation). If it gets into the eyes, rinse with plenty of water and follow the first-aid information on the label; if irritation persists, get medical help and take the label with you.

Is checking the pH enough when choosing a soap?

No. The pH value alone does not show that a product is safe or suitable for your job. Look at the dispenser type, the pack, the instructions and warnings on the label and the safety data sheet together.

Where is the safety information for your other liquid hand soaps?

Each product's safety summary is on its own product page. All our soaps are in the liquid soaps category.

Guide · Product information and safe use · November 7, 2026

What Is the pH of Liquid Soap?

The pH value shows how acidic or alkaline a soap is; how to use the product is explained on its label. This guide covers the pH and warning information in the safety data sheets (SDS) of two of our soaps, how to read the pH scale, what these values mean in use and how to request the sheet when buying in bulk.

What pH does liquid soap have?

According to the SDS, the pH of START Hand Cleaning Liquid is 5–7 and that of START Foam Hand Soap is 5.5–7; in other words, both lie between slightly acidic and neutral and are not alkaline.

Liquid soap has no single pH value; it varies from product to product and is given in each product's own safety data sheet.

How do you read the pH scale?

The pH scale runs from 0 to 14, and 7 is considered neutral. Below 7 a product is acidic, and above it basic (alkaline). The scale is logarithmic: a difference of one unit is a tenfold difference in acidity.

On this scale, the 5–7 range is a slightly acidic zone close to neutral, while values such as 1–2 or 12 lie near the ends of the scale. A product's pH value is given in the physical and chemical properties part of its safety data sheet (section 9).

START Hand Cleaning Liquid: pH and warnings in the SDS

Values from the safety data sheet of this product, used for everyday hand washing with pump bottles and liquid soap dispensers:

pH (20 °C): 5–7.
Signal word and pictogram: Warning; GHS07 (exclamation mark).
Hazard statement: H319, causes serious eye irritation.
Transport: Not classified as dangerous goods under ADR.
Packaging: 5 L (4 per case), 20 kg and 30 kg (single units).
Sheet: It appears in our list as START Hand Soap. A Safety Data Sheet can be requested; the list and how to request it are on the safety data sheets page.
Where the product is used is covered in the guide what is hand cleaning liquid.

START Foam Hand Soap: pH and warnings in the SDS

Values from the safety data sheet of this product, which is filled into foam pump bottles or foam soap dispensers:

pH (20 °C): 5.5–7.
Signal word and pictogram: Warning; GHS07 (exclamation mark).
Hazard statement: H319, causes serious eye irritation.
Transport: Not classified as dangerous goods under ADR.
Packaging: 5 kg (4 per case) and 30 kg (single units).
Sheet: It appears in our list as START Foam Hand Soap; how to request it is explained on the safety data sheets page.
How the foam forms in the pump is explained in what is foam soap.

What do these values mean in use?

For hands: Both products are for everyday hand washing; they are used on wet hands and rinsed off with plenty of water. The steps are in how to use liquid soap.
Not for limescale or grease: Limescale is removed with acidic products and burnt-on grease with alkaline ones; a near-neutral hand soap does not replace them.
Acidic end: According to its SDS, START Limescale & Rust Remover has a pH of 1–2 and carries the signal word Danger. It is used with gloves and safety goggles in a ventilated area; it is not mixed with bleach or chlorinated products, not applied to hands and not used on metal, taps and fittings, enamel, chrome, marble or natural stone.
Alkaline end: According to its SDS, START Degreaser has a pH of 12 and carries the signal word Danger. It is used with gloves and safety goggles in a ventilated area; it is not mixed with acidic products, not applied to hands and not used on aluminium, galvanised, painted or non-stick surfaces.
Close pH, different job: According to its SDS, START All-Purpose Surface Cleaner has a pH of 7–8; the value is close to these two soaps, but the product is made for cleaning surfaces. Use each product for the job stated on its label.
Choosing for the dispenser: The pump, not the pH, decides the type of soap: foam hand soap is used in a foam pump and liquid hand soap in a standard pump (foam soap or liquid soap).
How product groups are divided by pH is explained in what are cleaning chemicals.

Does the pH value show that a product is safe?

No. The pH value only shows the degree of acidity or alkalinity; on its own it does not show that a product is safe or suitable for your job. What counts are the instructions and warnings on the label.

Eye contact: Although their values are close to neutral, the SDSs of both products list H319. If the product gets into the eyes, rinse with plenty of water and follow the first-aid information on the label; if irritation persists, take the label with you and get medical help.
Mixing: Do not add bleach, limescale remover or any other cleaning product to soap, and do not mix different soaps together. The rules are in can cleaning products be mixed.
Thinning with water: Do not add water to the soap unless the label gives dilution instructions.
Storage: Keep it in its original container, tightly closed and out of the reach of children.

Our other liquid hand soaps and their packaging

Each product's safety summary is on its own product page. Our liquid hand soaps and their packs:

TETİK Liquid Hand Soap: 500 g, 5 kg (also available in PET), 20 kg and 30 kg.
TETİK Liquid Hand Soap — Extra (Orange): 5 kg PET and 30 kg.
TETİK Liquid Hand Soap — Super Extra (White): 20 kg.
TETİK Liquid Hand Soap with Active Oxygen: 400 g.
START Liquid Hand Soap: 500 g.
Case quantities and colour options are on the product pages.

For wholesale buyers and institutions: how do you request the pH and SDS?

Ask for the sheet: In the technical specification or quote request, ask for a Turkish-language Safety Data Sheet for each soap item. The pH value is in section 9 of the sheet, and the signal word and H statements are in section 2 (what is a safety data sheet).
Do not make pH the only criterion: Define each item together with its place of use, dispenser type and pack; how to structure the specification is explained in technical specification for cleaning supplies.
State the dispenser type: Ask for foam hand soap for foam pumps and liquid hand soap for standard pumps. Packs and refilling are covered in the wholesale liquid soap and wholesale foam hand soap guides.
Send your request: Enter the product name, the pack and the sheet you need in the quote form; for the sheet of a product not on the list, use the contact page.

As a liquid soap manufacturer

Tetikoğlu Kimya has produced cleaning products since 1997 and is a liquid soap manufacturer. We present our facility in Istanbul İkitelli OSB on the production page and the general steps of making liquid soap in how is liquid soap made.

Prepared by: Tetikoğlu Kimya — cleaning chemicals manufacturer since 1997. When using products, always follow the instructions and warnings on the pack.