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Chemistry World engagement report

@ChemistryWorld - 418K followers on X

Measured over 105 original posts from a 30-day window, last computed on September 26, 2026.

Engagement

Bottom quarter for its size
Per follower
0.002%
of 418K followers
Per impression
0.324%
2.5K views on a typical post
Reach
0.59%
of its followers see a post
Typical post
8
interactions (median)
Saved
0.041%
1 bookmarks on a typical post
Posting rate
3.57/day
active 57% of days
Peak time
09:00 UTC
Thursday

A typical post picks up 8 interactions against 418K followers, an engagement rate of 0.002%. Measured over 105 original posts, its engagement rate beats 16% of 20,444 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 2.5K times each, and 0.324% of those impressions turn into an interaction. That is about 0.591% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.6 posts a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 09:00 UTC, and Thursday is the busiest day of the week. Of the 105 posts sampled, 15% carry an image or video and 100% link out. The account's strongest tracked post pulled 104 interactions, about 13x its own typical post.

Measured over 105 original posts from a 30-day window, last computed on September 26, 2026.

Compared with accounts its own size

Chemistry World's engagement rate beats 16% of the tracked X accounts closest to it in follower count (20,444 accounts, accounts of similar size (decile 10 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.

On engagement per impression rather than per follower it beats 22% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.

Where this sits in the catalog

At 0.002%, Chemistry World sits below the 10th percentile of the 205,152 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.024%.

p100.004%
p250.024%
p50 (median)0.143%
p750.678%
p902.55%
p9982.4%
Engagement rate as a share of followers, across the 205,152 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 22,894 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.004%
25th percentile0.024%
50th percentile0.143%
75th percentile0.678%
90th percentile2.55%
99th percentile82.4%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 09:00 UTC, and Thursday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 09:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 09:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%89K
01:00 UTC-2%90K
02:00 UTC-3%88K
03:00 UTC-4%94K
04:00 UTC-5%76K
05:00 UTC-4%75K
06:00 UTC-5%86K
07:00 UTC-5%93K
08:00 UTC-4%108K
09:00 UTC-4%124K
10:00 UTC-3%129K
11:00 UTC-3%141K
12:00 UTC-3%154K
13:00 UTC-3%167K
14:00 UTC-4%173K
15:00 UTC-2%176K
16:00 UTC-3%171K
17:00 UTC-3%159K
18:00 UTC-2%149K
19:00 UTC-2%141K
20:00 UTC-1%131K
21:00 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Thursday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Thursday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Formats this account uses

Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video15% of posts+111%+108% to +115%34K
Outbound link100% of posts-41%-42% to -40%32K
Typical length-no effect-2% to -1%42K
  • 15% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
  • 100% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
  • Its average post runs 259 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.

These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.

Best tweets

  • Sep 24, 202613x their median

    The new structure expands diamond’s rigid 3D lattice by incorporating alternating single and triple bonds between the connection points and is one of the only carbon form capable of covalently bonding across all three dimensions. https://t.co/SIAOZf3Ec1

    8316327.8K viewsView on X
  • Sep 22, 20267.3x their median

    A new total synthesis of (+)-colchicine epitomises how green chemistry tools are becoming mainstream strategies for building complex molecules. Irene Sanchez Molina reports: https://t.co/nHlEi5o1Ad

    506115.0K viewsView on X
  • Sep 17, 20265.9x their median

    A new record has been achieved in protein imaging, capturing the protein rubredoxin at an unprecedented resolution of 0.43 angstroms, revealing structural features at a level rarely achieved for biological macromolecules. https://t.co/MoB062lTS6

    387025.4K viewsView on X
  • Sep 17, 20265.5x their median

    ‘I don’t know how they’ll rebuild trust. I hope there will be some lawsuit, I’m not a fan of suing people in general but this is a big scandal,’ says Elisabeth Bik. @MicrobiomDigest @addictedtoigno1 https://t.co/scmyxjNJHe

    2912128.8K viewsView on X
  • Sep 23, 20265.0x their median

    When two sheets of graphene layered together are twisted out of atomic alignment with each other, the familiar honeycomb appearance dissolves and new properties emerge. Read on: https://t.co/4ZcTuOsKvi

    326114.0K viewsView on X
  • Sep 25, 20264.9x their median

    ‘Every hour a chemist spends deciphering figures or images to see what has already been made is an hour that could instead be spent on chemistry discovery,’ says Mirit Eldor, life sciences managing director at Elsevier. https://t.co/JovzR7WMwN

    344104.4K viewsView on X
  • Sep 1, 20264.5x their median

    ‘The loss of a student’s precious life in an accident of this nature at a university, where education and research should be conducted in a safe environment, is a matter of profound concern,’ the university said. https://t.co/rOxBS4Jlm4

    286029.0K viewsView on X
  • Aug 24, 20264.4x their median

    By reconstructing a complex 45-enzyme biosynthetic pathway inside yeast, researchers in China have unlocked the direct microbial synthesis of key precursors that could offer a more efficient way to make the drugs than the current synthetic routes. Read: https://t.co/jUIndB3dEi

    249113.6K viewsView on X
  • Aug 19, 20264.4x their median

    The challenge for Gouverneur’s team was to reengineer the Appel reaction to suppress the formation of the unwanted difluorophosphorane side product. Read about the work undertaken to meet this challenge: https://t.co/SCl5eWd3tS

    295103.6K viewsView on X
  • Sep 18, 20264.3x their median

    The method eliminates the harsh conditions that have previously been required to generate extremely reactive hydrogen radicals, making them much easier for scientists to use and exploit. ‘Any chemist could run it,’ says project leader Roopender Kumar. https://t.co/uwnWoQSMsD

    302115.1K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

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Reading these numbers

A typical post picks up 8 interactions against 418K followers, an engagement rate of 0.002%. Measured over 105 original posts, its engagement rate beats 16% of 20,444 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 2.5K times each, and 0.324% of those impressions turn into an interaction. That is about 0.591% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.6 posts a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 09:00 UTC, and Thursday is the busiest day of the week. Of the 105 posts sampled, 15% carry an image or video and 100% link out. The account's strongest tracked post pulled 104 interactions, about 13x its own typical post.

What is Chemistry World's engagement rate on X?
Chemistry World (@ChemistryWorld) has an engagement rate of 0.002%, based on the median interactions across 105 original posts from the last 30 days against 417,604 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.002%, Chemistry World sits below the 10th percentile of the 205,152 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @ChemistryWorld have real engagement?
Its engagement rate beats 16% of the tracked X accounts closest to it in follower count (20,444 accounts), which puts it in the bottom quarter for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
When does @ChemistryWorld post?
Most posts go out around 09:00 UTC, and Thursday is its busiest day, at roughly 3.57 posts per day across the measured window.

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