| Corrosive compounds |
LA Times Daily |
17 Mar 2026 |
| They have pH's below 7 |
New York Times |
07 Jan 2026 |
| They're far from basic! |
The Telegraph Cross Atlantic |
03 Jan 2026 |
| Corrosive liquids |
Newsday |
29 Dec 2025 |
| Lab liquids |
Thomas Joseph |
26 Dec 2025 |
| Corrosive chemicals |
Commuter |
17 Dec 2025 |
| Etching fluids |
Newsday |
07 Sep 2025 |
| Bases' opposites |
TV |
07 Sep 2025 |
| Bases' opposites |
TV |
31 Aug 2025 |
| Opens aunt's chocolates in den, sneakily, though they're not great for the teeth |
|
|
| Lab liquids |
Thomas Joseph |
19 Jul 2025 |
| Base opposers |
Thomas Joseph |
09 Jul 2025 |
| Battery liquids |
Universal |
08 Jul 2025 |
| Vinegar and lemon juice |
USA Today |
05 Jul 2025 |
| Chemical agents found in police department in Athens outskirts (5) |
|
|
| Chem lab liquids |
Newsday |
22 Jun 2025 |
| They're sour when around detectives (5) |
|
|
| Substances that neutralize bases |
|
|
| Vinegar and lemon juice, etc, food ... |
|
|
| Sour stuff |
TV |
25 May 2025 |
| They're far from basic |
The Telegraph Cross Atlantic |
03 May 2025 |
| Corrosive liquids |
Newsday |
28 Apr 2025 |
| Sour liquids |
Newsday |
18 Apr 2025 |
| Amino __ |
Commuter |
02 Apr 2025 |
| Complements to salts and fats in the kitchen |
New York Times |
13 Mar 2025 |
| Vinegar and lemon juice, chemically |
Universal |
11 Mar 2025 |
| Corrosive substances said to be spilt around clubs (5) |
|
|
| Lab liquids |
Eugene Sheffer |
03 Jan 2025 |
| Low-pH substances |
Universal |
15 Dec 2024 |
| Base balancers |
Wall Street Journal |
16 Nov 2024 |
| Corrosive compounds |
LA Times Daily |
21 Oct 2024 |
| They're not basic |
LA Times Daily |
19 Oct 2024 |
| Corrosive chemicals |
LA Times Daily |
17 Sep 2024 |
| Hydrochloric and sulfuric, for example |
|
|
| They turn litmus paper red |
Universal |
27 Jul 2024 |
| See 2-Down |
Wall Street Journal |
29 Jun 2024 |
| Opposite of alkalis |
|
|
| Neutralizers of bases |
|
|
| Basically all cops in Delhi seize chemical agents (5) |
|
|
| Corrosive substances |
TV |
19 May 2024 |
| Counterparts of bases |
USA Today |
11 May 2024 |
| Citric and boric |
|
|
| Lab liquids |
Eugene Sheffer |
08 Apr 2024 |
| Sour compounds |
LA Times Daily |
24 Mar 2024 |
| See 12-Across |
Wall Street Journal |
18 Mar 2024 |
| They are in a scale between 0 and 7 (5) |
|
|
| Corosive substances |
|
|
| Coffee and Coca-Cola, on the pH scale |
New York Times Mini |
24 Jan 2024 |
| Some rust removers |
Newsday |
13 Jan 2024 |
| Vitamin C and vinegar, eg (5) |
|
|
| Liquids low on the pH scale |
|
|
| Proton donors |
|
|
| One side of a chemistry scale |
New York Times |
02 Dec 2023 |
| Orange juice and soda, chemically |
Universal |
15 Nov 2023 |
| Lab supplies |
Newsday |
03 Nov 2023 |
| Some invisible inks |
LA Times Daily |
13 Oct 2023 |
| Lime juice and vinegar, for two |
Universal |
16 Sep 2023 |
| Bases' counterparts |
USA Today |
03 Sep 2023 |
| Amino ___ (building blocks of proteins) |
|
|
| Low-pH substances |
USA Today |
11 Jul 2023 |
| Battery fluids |
USA Today |
04 Jun 2023 |
| Lab liquids |
Thomas Joseph |
17 May 2023 |
| Corrosive liquids |
Wall Street Journal |
25 Apr 2023 |
| Essential fatty __ |
LA Times Daily |
12 Mar 2023 |
| They turn pH paper red |
USA Today |
18 Feb 2023 |
| Sulphuric and muriatic |
|
|
| They're far from basic |
New York Times |
21 Jan 2023 |
| Low-pH liquids |
New York Times |
12 Dec 2022 |
| They turn litmus paper red |
Universal |
25 Nov 2022 |
| Etching supply |
LA Times Daily |
23 Sep 2022 |
| Lab liquids |
Thomas Joseph |
21 Sep 2022 |
| Rust removers |
Newsday |
10 Sep 2022 |
| Corrosive compounds |
LA Times Daily |
08 Sep 2022 |
| Battery liquids |
USA Today |
23 Aug 2022 |
| Litmus reddeners |
LA Times Daily |
18 Aug 2022 |
| Etching solutions |
Universal |
17 Aug 2022 |
| Lemon juice and vinegar, for two |
New York Times |
02 Aug 2022 |
| Bases' chemical counterparts |
Universal |
29 Jul 2022 |
| They lower pools' pH levels |
Universal |
05 Jun 2022 |
| Lab liquids |
Eugene Sheffer |
09 May 2022 |
| Amino ___ (building blocks of proteins) |
|
|
| Lab liquids |
Thomas Joseph |
12 Mar 2022 |
| Essential fatty __ |
|
|
| Essential fatty __ |
LA Times Daily |
02 Mar 2022 |
| Lab liquids |
Thomas Joseph |
23 Feb 2022 |
| Corrosive substances |
Universal |
05 Jan 2022 |
| Lab liquids |
Eugene Sheffer |
24 Dec 2021 |
| Lab liquids |
Thomas Joseph |
20 Nov 2021 |
| Low-pH liquids |
Premier Sunday |
07 Nov 2021 |
| Bases' opposite, to a chemist |
|
|
| Glycolic and hyaluronic, e.g |
USA Today |
13 Oct 2021 |
| Etching agents |
Universal |
01 Sep 2021 |
| They turn litmus paper red |
|
|
| Substances like HCl and HF |
USA Today |
20 Jul 2021 |
| Lab liquids |
Eugene Sheffer |
16 Jul 2021 |
| It's no free ride |
New York Times |
03 Jun 2021 |
| Corrosive substances |
USA Today |
08 May 2021 |
| Amino ___ (building blocks of proteins) |
|
|
| They turn litmus paper red |
New York Times |
31 Mar 2021 |
| Lab liquids |
Thomas Joseph |
19 Mar 2021 |
| Bases' opposites, in chemistry |
Universal |
13 Mar 2021 |
| Amino ___ (building blocks of proteins) |
|
|
| Vinegar and lemon juice, chemically |
Universal |
01 Mar 2021 |
| Strong or weak solutions in a lab |
|
|
| Hydrochloric and others |
|
|
| Corrosive chemicals |
Newsday |
28 Dec 2020 |
| Corrosive liquids |
Wall Street Journal |
21 Dec 2020 |
| Stomach __: digestive aids |
LA Times Daily |
14 Dec 2020 |
| Stomach __: digestive aids |
|
|
| Lemon juice and vinegar, e.g |
New York Times |
17 Nov 2020 |
| Corrosive liquids |
Newsday |
20 Oct 2020 |
| Low-pH compounds |
USA Today |
07 Oct 2020 |
| Low-pH solutions |
Wall Street Journal |
21 Sep 2020 |
| Sour-tasting stuff |
Newsday |
11 Sep 2020 |
| They're not basic |
New York Times |
29 Aug 2020 |
| Etchers' liquids |
Premier Sunday |
09 Aug 2020 |
| Amino and acetic |
Universal |
16 Jul 2020 |
| Certain vitamins |
Newsday |
11 Jul 2020 |
| They turn blue litmus paper red |
Universal |
01 Jul 2020 |
| Chemical substances that turn litmus paper red |
|
|
| Corrosive fluids |
Newsday |
27 Jan 2020 |
| Base balancers |
Wall Street Journal |
26 Dec 2019 |
| Amino ___ (building blocks of proteins) |
|
|
| Amino ___ (building blocks of proteins) |
Universal |
03 Dec 2019 |
| See 14-Down |
LA Times Daily |
13 Sep 2019 |
| See 14-Down |
|
|
| Contents of some flasks |
|
|
| Chem lab array |
LA Times Daily |
14 Jun 2019 |
| Chem lab array |
|
|
| HCl and HF, for two |
USA Today |
26 May 2019 |
| Corrosive compounds |
|
|
| Corrosive compounds |
LA Times Daily |
16 Apr 2019 |
| Play a disc produced by The Chemical Brothers presumably |
|
|
| They turn litmus paper red |
|
|
| They turn litmus paper red |
LA Times Daily |
20 Feb 2019 |
| Corrosive compounds |
|
|
| Chem lab array |
|
|
| HCl and HF, for two |
|
|
| They turn litmus paper red |
|
|
| See 14-Down |
|
|
| Caustic substances that are the opposites of bases |
|
|
| Litmus reddeners |
|
|
| Litmus reddeners |
LA Times Daily |
21 Aug 2018 |
| Corrosive compounds |
USA Today |
03 Aug 2018 |
| Corrosive chemicals damaged a disc |
|
|
| Etching solutions |
|
|
| Lab liquids |
Newsday |
06 Jul 2018 |
| Chemistry lab fluids |
LA Times Daily |
04 Jul 2018 |
| Chemistry lab fluids |
|
|
| Counterparts of tannins, in wine tasting |
New York Times |
01 Jun 2018 |
| Low-pH chemicals |
Newsday |
27 May 2018 |
| Gastric juice components |
USA Today |
30 Mar 2018 |
| Etchers' fluids |
USA Today |
09 Feb 2018 |
| Corrosive chemicals |
USA Today |
07 Feb 2018 |
| Hazardous compounds |
|
|
| Corrosive agents |
Thomas Joseph |
06 Jan 2018 |
| They have pHs below 7 |
LA Times Daily |
04 Jan 2018 |
| They have pHs below 7 |
|
|
| Etchers' fluids |
|
|
| Counterparts of tannins, in wine tasting |
|
|
| They have pHs below 7 |
|
|
| Litmus reddeners |
|
|
| Chemistry lab fluids |
|
|
| Low-pH compounds |
|
|
| Corrosive chemicals |
|
|
| Corrosive compounds |
|
|
| Gastric juice components |
|
|
| Police department's occupied as finding dangerous substances |
The Telegraph Cryptic |
25 Dec 2017 |
| Vinegar and lime juice |
New York Times |
02 Dec 2017 |
| Hydrochloric and boric |
Universal |
05 Nov 2017 |
| Sour substances |
Wall Street Journal |
04 Nov 2017 |
| Etcher's purchase |
Newsday |
26 Oct 2017 |
| Alkali neutralizers |
USA Today |
03 Oct 2017 |
| Etching supplies |
|
|
| Etching supplies |
LA Times Daily |
27 Sep 2017 |
| One end of the pH scale |
New York Times |
22 Sep 2017 |
| Boric and citric |
USA Today |
13 Sep 2017 |
| Litmus reddeners |
Wall Street Journal |
26 Aug 2017 |
| Low pH substances |
Universal |
30 Jul 2017 |
| Helps to have cold liquids that promote digestion |
|
|
| Corrosive liquids |
Universal |
18 Jul 2017 |
| Low-pH liquids |
Newsday |
02 Jul 2017 |
| Eating things |
New York Times |
21 Apr 2017 |
| They turn litmus paper red |
|
|
| Etchers' purchases |
Newsday |
17 Feb 2017 |
| Etchers' supplies |
USA Today |
10 Jan 2017 |
| Vinegar and lime juice |
|
|
| Etchers' supplies |
|
|
| Etching supplies |
|
|
| Boric and citric |
|
|
| Alkali neutralizers |
|
|
| Low pH substances |
|
|
| Hydrochloric and boric |
|
|
| Eating things |
|
|
| One end of the pH scale |
|
|
| Corrosive liquids |
|
|
| Sour substances |
LA Times Daily |
19 Dec 2016 |
| Some corrosive liquids |
Universal |
17 Dec 2016 |
| Compound said to define 'carbolic' for a start -- one of these? |
The Telegraph Toughie |
14 Dec 2016 |
| Etching supply |
|
|
| Digestive juices |
|
|
| Reg leaves in disgrace with corrosive types |
|
|
| Some corrosives |
Universal |
17 Jun 2016 |
| They turn litmus paper red |
|
|
| Chem lab hazards |
|
|
| Some corrosives |
|
|
| Vinegar and others |
New York Times |
04 Dec 2015 |
| Etching fluids |
Newsday |
29 Nov 2015 |
| Corrosive fluids |
Eugene Sheffer |
22 Aug 2015 |
| Corrosive compounds |
Newsday |
16 Aug 2015 |
| Litmus reddeners |
Universal |
17 Jul 2015 |
| Lemon juice and coffee, on the pH scale |
New York Times |
22 Jun 2015 |
| Low-pH compounds |
Newsday |
28 May 2015 |
| Alkali neutralizers |
Eugene Sheffer |
25 Mar 2015 |
| Boric and amino |
|
|
| They turn litmus paper red |
Universal |
03 Jan 2015 |
| Lemon juice and coffee, on the pH scale |
|
|
| Corrosive compounds |
|
|
| Corrosive compounds |
|
|
| Corrosive liquids |
|
|
| Etching fluids |
|
|
| Low-pH compounds |
|
|
| Low-pH liquids |
|
|
| They turn litmus paper red |
|
|
| Litmus reddeners |
|
|
| Vinegar and others |
|
|
| Etchers' fluids |
|
|
| One side of the pH scale |
|
|
| Acetic and nitric, e.g. |
|
|
| Etching supplies |
|
|
| Corrosive chemicals |
|
|
| Sour liquids |
|
|
| Pool supplies |
|
|
| Base neutralizers |
|
|
| Corrosive materials |
|
|
| Reactors to litmus |
|
|
| Fatty __ |
|
|
| Tums targets |
|
|
| Base neutralizers |
|
|
| Vinegar and vitamin C |
|
|
| Tummy upsetters |
|
|
| Acetic and nitric |
|
|
| "Wake Up! Here Come the ___" |
|
|
| Lab bottles |
|
|
| Fatty ___ |
|
|
| They're not basic things |
|
|
| Chem lab array |
|
|
| Gastric juices, e.g. |
|
|
| Etcher's etchers |
|
|
| Base counterparts |
|
|
| Substances low on the 49-Across |
|
|
| Some are fatty |
|
|
| Litmus reddeners |
|
|
| Lab chemicals |
|
|
| Etcher's etchers |
|
|
| Rust removers |
|
|
| Some are fatty |
|
|
| Nucleic and hydrochloric |
|
|
| Etching supplies |
|
|
| Tums targets |
|
|
| Stomach foes of hard-partying rockers |
|
|
| Corrosive liquids |
|
|
| Tums targets |
|
|
| Etcher's supply |
|
|
| Fatty __ |
|
|
| Lab flask contents, perhaps |
|
|
| Chemical-burn causers |
|
|
| Litmus reddeners |
|
|
| Base neutralizers |
|
|
| Bases' antitheses |
|
|
| Chemistry lab supply |
|
|
| Corrosive liquids |
|
|
| Lab flask contents, perhaps |
|
|
| Fatty __ |
|
|
| Etcher's supply |
|
|
| Bases' antitheses |
|
|
| See 27-Across |
|
|
| Aminos, e.g. |
|
|
| Chem-lab liquids |
|
|
| Compounds in vinegar and car batteries |
|
|
| Low-pH compounds |
|
|
| Gastric juices, e.g. |
|
|
| Alkali neutralizers |
|
|
| Lab hazards |
|
|
| Stomach contents |
|
|
| Durer supplies |
|
|
| Lab collections |
|
|
| Gastric juices, e.g. |
|
|
| Bases' counterparts |
|
|
| Lab-bottle fillers |
|
|
| Tummy troublers |
|
|
| Stomach contents |
|
|
| Lab assortment |
|
|
| Citric and nitric |
|
|
| RNA and DNA |
|
|
| Litmus reddeners |
|
|
| They may cause breakdowns |
|
|
| Low-pH substances |
|
|
| Hydrochloric and boric |
|
|
| Etching fluids |
|
|
| Etching fluids |
|
|
| Bases' counterparts |
|
|
| Lab-bottle contents |
|
|
| Causes of breakdowns |
|
|
| Some are fatty |
|
|
| Litmus reddeners |
|
|
| Some are fatty |
|
|
| Corrosive substances |
|
|
| Etchants |
|
|
| Nitric and boric |
|
|
| Etcher's need |
|
|
| Boric and folic |
|
|
| Tannic and boric |
|
|
| Litmus reddeners |
|
|
| Amino and folic |
|
|
| Low pH liquids |
|
|
| Tums' targets |
|
|
| Chem lab array |
|
|
| Etching materials |
|
|
| Chem lab substances |
|
|
| Low-pH compounds |
|
|
| Lab supply |
|
|
| Boric and citric |
|
|
| Vinegar and lemon juice |
|
|
| Citric and others |
|
|
| Etcher's needs |
|
|
| Cause of stomach problems, sometimes |
|
|
| They turn litmus paper red |
|
|
| Base opposites |
|
|
| Corrosive liquids |
|
|
| Acetic and nitric |
|
|
| Lab liquids |
|
|
| HCl and others |
|
|
| Stomach ___ |
|
|
| Litmus reddeners |
|
|
| Tummy upsetters |
|
|
| They have pH's of less than 7 |
|
|
| Chem lab collection |
|
|
| Low-pH substances |
|
|
| Bases' opposites |
|
|
| Bases' opposite |
|
|
| Some are fatty |
|
|
| HCl and HF |
|
|
| H2SO4 and such |
|
|
| Base antagonists |
|
|
| Chem lab collection |
|
|
| Etching materials |
|
|
| Corrosive agents |
|
|
| Litmus reddeners |
|
|
| Oxalic and oleic |
|
|
| Stomach sourers |
|
|
| Fluids in flasks |
|
|
| Reactors to litmus |
|
|
| Etcher's chemicals |
|
|
| Low-pH solutions |
|
|
| Sour substances |
|
|
| Tummy troublers |
|
|
| They have low pH's |
|
|
| Niacin and vitamin C |
|
|
| Amino ___ |
|
|
| Metal eaters |
|
|
| Etching needs |
|
|
| Stomach ___ |
|
|
| They turn litmus red |
|
|
| Boric and citric |
|
|
| They have low pH's |
|
|
| Ascorbic and boric <P>e.g. |
|
|
| These can be citric |
|
|
| Base neutralizers |
|
|
| Niacin and others |
|
|
| Substances with low pH |
|
|
| Stomach _____ |
|
|
| Etchers' needs |
|
|
| They redden litmus |
|
|
| Chemists' substances |
|
|
| Stomach churners |
|
|
| Sour substances |
|
|
| Amino and tannic ___ |
|
|
| They turn litmus red |
|
|
| Etchers' purchases |
|
|
| Amino ___ (metabolic group) |
|
|
| Some corrosives |
|
|
| Etching agents |
|
|
| Base opposites |
|
|
| Corrosives |
|
|
| Boric and prussic ___ |
|
|
| Alkalis' opposites |
|
|
| Etching materials |
|
|
| Folic and formic |
|
|
| Amino and others |
|
|
| Substances used by etchers |
|
|
| Vinegar, etc. |
|
|
| Boric and carbolic |
|
|
| Carbolic and amino |
|
|
| Sour things |
|
|
| Amino et al. |
|
|
| Lab hazards |
|
|
| Dyestuffs. |
|
|
| Lab items. |
|
|
| Tannic and sulphuric. |
|
|
| Niacin and others. |
|
|
| Etchers' equipment. |
|
|
| Laboratory substances. |
|
|
| Corrosives. |
|
|
| Laboratory essentials. |
|
|
| Nitric and citric. |
|
|
| Chemicals. |
|
|
| Prussic, acetic, etc. |
|
|
| Nitric and sulphuric. |
|
|
| Etching liquids. |
|
|
| Amino ___. |
|
|
| Chemical compounds. |
|
|
| Sour things. |
|
|
| Prussic, boric, etc. |
|
|
| Nitric and prussic. |
|
|
| Chemicals used in dyes. |
|
|
| Powerful caustics. |
|
|
| Etching materials. |
|
|
| They're used in mineral processing |
|
|
| Base counterparts |
|
|
| Sour substances. |
|
|